[ARM] 5257/2: [AT91] Use SZ_ definitions and MTDPART_OFS_NXTBLK instead of hex-values

In the various AT91 board files, replace hard-coded size values (eg,
0x800000) with the SZ_ size definitions (eg, SZ_8M) from sizes.h
Also replace MTD partition offsets with MTDPART_OFS_NXTBLK.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index d4eba5c..b588ead 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -122,16 +122,16 @@
 	{
 		.name   = "Bootstrap",
 		.offset = 0,
-		.size   = 4 * 1024 * 1024,
+		.size   = 4 * SZ_1M,
 	},
 	{
 		.name	= "Partition 1",
-		.offset	= 4 * 1024 * 1024,
-		.size	= 60 * 1024 * 1024,
+		.offset	= MTDPART_OFS_NXTBLK,
+		.size	= 60 * SZ_1M,
 	},
 	{
 		.name	= "Partition 2",
-		.offset	= 64 * 1024 * 1024,
+		.offset	= MTDPART_OFS_NXTBLK,
 		.size	= MTDPART_SIZ_FULL,
 	},
 };