sh: Fix rsk7264 pin setup for on-board ethernet

This sets up the external ethernet IRQ pin.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/rsk7264/lowlevel_init.S

@@ -185,7 +185,7 @@ CS0WCR_D:	.long 0x00000B41
 CS0BCR_A:	.long 0xFFFC0004
 CS0BCR_D:	.long 0x10000400
 PJCR0_A:	.long 0xFFFE390E
-PJCR0_D:	.word 0x0300
+PJCR0_D:	.word 0x3300
 .align 2
 CS2WCR_A:	.long 0xFFFC0030
 CS2WCR_D:	.long 0x00000B01