Align ChibiOS spi_master behaviour with AVR (qmk#11404)

* Align ChibiOS spi_master behaviour with AVR

* Rollback `spi_transmit()` and `spi_receive()` to preserve DMA

Fix broken Lighting Layers when RGBLIGHT_MAX_LAYERS > 16 (qmk#11406)

* fix incorrect bit math when RGBLIGHT_MAX_LAYERS > 16

* with 1UL cast is not needed

* ...but just casting works and is even more efficient

* cformat

speed up list_keyboards.sh

Manually run formatting CI process (qmk#11375)

Add target 'check-md5' to `build_keyboard.mk` (qmk#11338)

* Add target 'build-for-compare' to `build_keyboard.mk`

The `build-for-compare` target provides an easy way to check the md5 checksum of the generated binary.

You can easily see if there is any change in the generated binaries between the two versions, as in the example below.

```
$ git checkout 0.11.0
M	build_keyboard.mk
M	tmk_core/rules.mk
Note: checking out '0.11.0'.
HEAD is now at c66df16 2020 November 28 Breaking Changes Update (qmk#11053)

$ make helix:all:build-for-compare | grep ^MD5
MD5 (.build/helix_rev2_default.hex) = 5c3606562c944bb4d18832e601b45d4a
MD5 (.build/helix_rev2_edvorakjp.hex) = 9e43d13d389d518ba7e99cd7337e28d6
MD5 (.build/helix_rev2_five_rows.hex) = 8bcb61c2fd5d237c2997f2fa007d4934
MD5 (.build/helix_rev2_five_rows_jis.hex) = b97cd818d52f73ca2d4e78c86d90a791
MD5 (.build/helix_rev2_froggy.hex) = c492172364188f4e2918b10bf0f3a0a6
MD5 (.build/helix_rev2_froggy_106.hex) = b0861fd735a8f81881a8c02730641a2b
MD5 (.build/helix_rev2_led_test.hex) = 5c97d982a5da5cfb3dacb28a8934b81d
MD5 (.build/helix_rev2_xulkal.hex) = 01f603dc46bcf9094d7e106831d8f5b1
MD5 (.build/helix_rev2_yshrsmz.hex) = 5a008bca2d0c5790a151c02834c529ba

$ git checkout 0.11.1
M	build_keyboard.mk
M	tmk_core/rules.mk
Previous HEAD position was c66df16 2020 November 28 Breaking Changes Update (qmk#11053)
HEAD is now at cc08e30 nix-shell: add milc dependency (qmk#11086)

$ make helix:all:build-for-compare | grep ^MD5
MD5 (.build/helix_rev2_default.hex) = 5c3606562c944bb4d18832e601b45d4a
MD5 (.build/helix_rev2_edvorakjp.hex) = 9e43d13d389d518ba7e99cd7337e28d6
MD5 (.build/helix_rev2_five_rows.hex) = 8bcb61c2fd5d237c2997f2fa007d4934
MD5 (.build/helix_rev2_five_rows_jis.hex) = b97cd818d52f73ca2d4e78c86d90a791
MD5 (.build/helix_rev2_froggy.hex) = c492172364188f4e2918b10bf0f3a0a6
MD5 (.build/helix_rev2_froggy_106.hex) = b0861fd735a8f81881a8c02730641a2b
MD5 (.build/helix_rev2_led_test.hex) = 5c97d982a5da5cfb3dacb28a8934b81d
MD5 (.build/helix_rev2_xulkal.hex) = d848383adfd7463b138c6da179cf1436
MD5 (.build/helix_rev2_yshrsmz.hex) = 5a008bca2d0c5790a151c02834c529ba
```

* make builds reproducable by default

* update build_keyboard.mk: remove 'build-for-compare' target

* GNU make (3.81) on macOS 10.14(Mojave) does not have the 'undefine' directive.

* Adopted fauxpark's suggestion.

* Update tmk_core/rules.mk

Co-authored-by: Ryan <[email protected]>

* update tmk_core/rules.mk

* fix tmk_core/rules.mk

Co-authored-by: Zach White <[email protected]>
Co-authored-by: Ryan <[email protected]>

Missed a couple more `#pragma once`s (qmk#11351)

Remove useless wait in AVR suspend code (qmk#11352)

Add libusb-devel dependency for fedora (qmk#11287)

On fedora 33, libusb-devel is required to build BootloadHID

Added mac variant of portuguese keymap extras (qmk#11260)

* Added mac variant of portuguese keymap

This keymap is very similar to the existing portuguese keymap, but
some symbols are moved around.

Apply suggestions from code review

Corrected whitespace and implemented some suggested changes.

Co-authored-by: Ryan <[email protected]>

Converted some spaces to nbsp

Added sendstring ISO version

* Apply suggestions from code review

Added suggestions from code review

Co-authored-by: Ryan <[email protected]>

* Replaced space with nbsp

* Corrected 2 chars in ascii_to_shift_lut

{ and } require shift

Co-authored-by: Ryan <[email protected]>

Add missing Debian/Ubuntu dependency to the install script (qmk#11348)

To successfully compile bootloadHID, we must have the libusb-config tool, which comes from the libusb-dev package. This package is available in both Ubuntu Groovy and Debian Buster

Co-authored-by: Jonathan Paugh <[email protected]>