mpc85xx/p1022ds: convert to generic board

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index bd08090..4371110 100644
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -11,6 +11,9 @@
 
 #include "../board/freescale/common/ics307_clk.h"
 
+#define CONFIG_SYS_GENERIC_BOARD
+#define CONFIG_DISPLAY_BOARDINFO
+
 #ifdef CONFIG_36BIT
 #define CONFIG_PHYS_64BIT
 #endif