sh: Update lowlevel_init.S of sh7763rdp

Fix data size.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

board/renesas/sh7763rdp/lowlevel_init.S

@@ -266,8 +266,8 @@ SDR4_D:		.long	0x00000300
 SDMR00308_D:	.long	0x00000000
 SDMR00B08_D:	.long	0x00000000
 SDMR02000_D:	.long	0x00000000
-PSEL0_D:	.long	0x00000001
-PSEL1_D:	.long	0x00000244
+PSEL0_D:	.word	0x00000001
+PSEL1_D:	.word	0x00000244
 SR_MASK_D:	.long	0xEFFFFF0F
 WDTST_D:	.long	0x5A000FFF
 WDTCSR_D:	.long	0xA5000000