arm: mvebu: Update name of kwbimage v1 field at offset 0x2-0x3

At this offset is stored nand page size.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c
index b798c79..27389bf 100644
--- a/arch/arm/mach-mvebu/spl.c
+++ b/arch/arm/mach-mvebu/spl.c
@@ -76,7 +76,7 @@
 struct kwbimage_main_hdr_v1 {
 	uint8_t  blockid;               /* 0x0       */
 	uint8_t  flags;                 /* 0x1       */
-	uint16_t reserved2;             /* 0x2-0x3   */
+	uint16_t nandpagesize;          /* 0x2-0x3   */
 	uint32_t blocksize;             /* 0x4-0x7   */
 	uint8_t  version;               /* 0x8       */
 	uint8_t  headersz_msb;          /* 0x9       */