[POWERPC] Add IPIC Kconfig option

IPIC is not just for 83xx anymore so make it a separate config option.

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 18f101b..2cec3431 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -22,6 +22,7 @@
 	depends on 6xx
 	select FSL_SOC
 	select 83xx
+	select IPIC
 	select WANT_DEVICE_TREE
 
 config PPC_86xx
@@ -80,6 +81,10 @@
 	bool
 	default y
 
+config IPIC
+	bool
+	default n
+
 config MPIC
 	bool
 	default n