arm: rmobile: alt: Enable channel 1 of sh-i2c

Alt board was connected Power IC to channel 1 of sh-i2c. Source code that
controls this is already included, but channel 1 of sh-i2c is not enabled.
This enables channel 1 of sh-i2c, and can use.

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

board/renesas/alt/alt.c

@@ -49,6 +49,10 @@ void s_init(void)
 #define SMSTPCR8	0xE6150990
 #define ETHER_MSTP813	(1 << 13)
 
+#define MSTPSR3		0xE6150048
+#define SMSTPCR3	0xE615013C
+#define IIC1_MSTP323	(1 << 23)
+
 #define mstp_setbits(type, addr, saddr, set) \
 	out_##type((saddr), in_##type(addr) | (set))
 #define mstp_clrbits(type, addr, saddr, clear) \
@@ -69,6 +73,9 @@ int board_early_init_f(void)
 	/* ETHER */
 	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
 
+	/* IIC1 / sh-i2c ch1 */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, IIC1_MSTP323);
+
 	return 0;
 }