ppc/85xx,86xx: Handling Unknown SOC version

Incase the system is detected with Unknown SVR, let the system boot
with a default value and a proper message.

Now with dynamic detection of SOC properties from SVR, this is necessary
to prevent a crash.

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index 78ef418..0a4c66c 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -1034,6 +1034,8 @@
 #define SVR_8641	0x809000
 #define SVR_8641D	0x809001
 
+#define SVR_Unknown	0xFFFFFF
+
 #define _GLOBAL(n)\
 	.globl n;\
 n: