MIPS: Allow pre-r6 emulation on SMP MIPSr6 kernels

There's no reason for the pre-r6 instruction emulation code to be
limited to uniprocessor kernels. We already emulate atomic memory access
instructions in a way that works for SMP systems, and nothing else
should be affected. Remove the artificial limitation, allowing pre-r6
instruction emulation to be used with SMP kernels.

Signed-off-by: Paul Burton <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/14410/
Signed-off-by: Ralf Baechle <[email protected]>

arch/mips/Kconfig

@@ -2288,16 +2288,14 @@ config MIPS_MT_FPAFF
 
 config MIPSR2_TO_R6_EMULATOR
 	bool "MIPS R2-to-R6 emulator"
-	depends on CPU_MIPSR6 && !SMP
+	depends on CPU_MIPSR6
 	default y
 	help
 	  Choose this option if you want to run non-R6 MIPS userland code.
 	  Even if you say 'Y' here, the emulator will still be disabled by
 	  default. You can enable it using the 'mipsr2emu' kernel option.
 	  The only reason this is a build-time option is to save ~14K from the
 	  final kernel image.
-comment "MIPS R2-to-R6 emulator is only available for UP kernels"
-	depends on SMP && CPU_MIPSR6
 
 config MIPS_VPE_LOADER
 	bool "VPE loader support."