[POWERPC] 8xx: Fix CONFIG_PIN_TLB.

1. Move CONSISTENT_START on 8xx so that it doesn't overlap the IMMR mapping.
2. The wrong register was being loaded into SPRN_MD_RPN.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b387e1ed..37ff383 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -600,6 +600,7 @@
 
 config CONSISTENT_START
 	hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
+	default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
 	default "0xff100000" if NOT_COHERENT_CACHE
 
 config CONSISTENT_SIZE_BOOL