mpc85xx: Add support for the P2020

Added various p2020 processor specific details:
* SVR for p2020, p2020E
* immap updates for LAWs and DDR on p2020
* LAW defines related to p2020

Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Travis Wheatley <Travis.Wheatley@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 4203ada..2a6ffba 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -951,6 +951,8 @@
 #define SVR_8568_E	0x807D00
 #define SVR_8572	0x80E000
 #define SVR_8572_E	0x80E800
+#define SVR_P2020	0x80E200
+#define SVR_P2020_E	0x80EA00
 
 #define SVR_8610	0x80A000
 #define SVR_8641	0x809000