powerpc/85xx: Set max alloc length to 10MB on P1022DS

In order to support 1920x01080 resolution, we must increase the alloc
length.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
CC: Anatolij Gustschin <agust@denx.de>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/configs/P1022DS.h

@@ -173,7 +173,7 @@
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
 #define CONFIG_SYS_MONITOR_LEN		(512 * 1024)
-#define CONFIG_SYS_MALLOC_LEN		(6 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(10 * 1024 * 1024)
 
 /*
  * Serial Port