ARM: clk-imx35: Fix build warnings with W=1

Fix the following warnings when building with W=1 option:

arch/arm/mach-imx/clk-imx35.c: In function 'mx35_clocks_init':
arch/arm/mach-imx/clk-imx35.c:70:12: warning: old-style function definition [-Wold-style-definition]
arch/arm/mach-imx/clk-imx35.c:201:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-imx/clk-imx35.c

@@ -67,13 +67,13 @@ enum mx35_clks {
 
 static struct clk *clk[clk_max];
 
-int __init mx35_clocks_init()
+int __init mx35_clocks_init(void)
 {
 	void __iomem *base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR);
 	u32 pdr0, consumer_sel, hsp_sel;
 	struct arm_ahb_div *aad;
 	unsigned char *hsp_div;
-	int i;
+	u32 i;
 
 	pdr0 = __raw_readl(base + MXC_CCM_PDR0);
 	consumer_sel = (pdr0 >> 16) & 0xf;