powerpc/85xx: Reserve a partition of NOR flash for QE ucode firmware

Due to the partition of JFFS2 overlaps with QE ucode firmware, So JFFS2
will break QE ucode. Shrink JFFS2's partition to reserve the space of
QE ucode firmware.
Signed-off-by: NJiucheng Xu <Jiucheng.Xu@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/p1021rdb-pc.dtsi

@@ -62,11 +62,19 @@
 		};
 
 		partition@400000 {
-			/* 11MB for JFFS2 based Root file System */
-			reg = <0x00400000 0x00b00000>;
+			/* 10.75MB for JFFS2 based Root file System */
+			reg = <0x00400000 0x00ac0000>;
 			label = "NOR JFFS2 Root File System";
 		};
 
+		partition@ec0000 {
+			/* This location must not be altered  */
+			/* 256KB for QE ucode firmware*/
+			reg = <0x00ec0000 0x00040000>;
+			label = "NOR QE microcode firmware";
+			read-only;
+		};
+
 		partition@f00000 {
 			/* This location must not be altered  */
 			/* 512KB for u-boot Bootloader Image */