powerpc/85xx: Kconfig cleanup

Introduce new FSL_SOC_BOOKE Kconfig to handle both 85xx and QorIQ
based chips.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index a6812ee..fdb9f0b 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -12,7 +12,7 @@
 obj-$(CONFIG_PPC_8xx)		+= 8xx/
 obj-$(CONFIG_PPC_82xx)		+= 82xx/
 obj-$(CONFIG_PPC_83xx)		+= 83xx/
-obj-$(CONFIG_PPC_85xx)		+= 85xx/
+obj-$(CONFIG_FSL_SOC_BOOKE)	+= 85xx/
 obj-$(CONFIG_PPC_86xx)		+= 86xx/
 obj-$(CONFIG_PPC_PSERIES)	+= pseries/
 obj-$(CONFIG_PPC_ISERIES)	+= iseries/