video: ipu reg: Correct reserved1 array size in struct ipu_cm

The array reserved1 as a placeholder in the structure ipu_cm
should contain 4 32bit unsigned integer entries instead of 16
ones, because the placeholder is located bewteen the register
IPU_CH_DB_MODE_SEL_1 and the register IPU_ALT_CH_DB_MODE_SEL_0
with the address offsets of 0x154 and 0x168 respectively.

Reported-by: Robin Gong <b38343@freescale.com>
Acked-by: Robin Gong <b38343@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>

drivers/video/ipu_regs.h

@@ -171,7 +171,7 @@ struct ipu_cm {
 	u32 gpr;
 	u32 reserved0[26];
 	u32 ch_db_mode_sel[2];
-	u32 reserved1[16];
+	u32 reserved1[4];
 	u32 alt_ch_db_mode_sel[2];
 	u32 reserved2[2];
 	u32 ch_trb_mode_sel[2];