[POWERPC] Convert 86xx platform to unified platform Kconfig

Moved 86xx platform Kconfig over to being sourced by the unified
arch/powerpc/platforms/Kconfig.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 176a27f..5f2cef0 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -1,5 +1,5 @@
 menu "Platform support"
-	depends on PPC64 || CLASSIC32
+	depends on PPC64 || CLASSIC32 || PPC_86xx
 
 choice
 	prompt "Machine type"
@@ -45,6 +45,7 @@
 source arch/powerpc/platforms/celleb/Kconfig
 source arch/powerpc/platforms/ps3/Kconfig
 source arch/powerpc/platforms/cell/Kconfig
+source "arch/powerpc/platforms/86xx/Kconfig"
 
 config PPC_NATIVE
 	bool