CLK: Pistachio: Add PLL driver

Add a driver for the integer (GF40LP_LAINT) and fractional (GF40LP_FRAC)
PLLs present on Pistachio.

Signed-off-by: Andrew Bresticker <[email protected]>
Cc: Mike Turquette <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Ezequiel Garcia <[email protected]>
Cc: James Hartley <[email protected]>
Cc: James Hogan <[email protected]>
Acked-by: Stephen Boyd <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/9316/
Signed-off-by: Ralf Baechle <[email protected]>

drivers/clk/pistachio/Makefile

@@ -1 +1,2 @@
 obj-y	+= clk.o
+obj-y	+= clk-pll.o