[ARM] MXC: rework timer/clock initialisation

- rename mxc_clocks_init to architecture specific versions. This
  allows us to have more than one architecture compiled in.
- call mxc_timer_init from clock initialisation instead from board
  code

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx1/mx1ads.c

@@ -118,8 +118,7 @@ static void __init mx1ads_init(void)
 
 static void __init mx1ads_timer_init(void)
 {
-	mxc_clocks_init(32000);
-	mxc_timer_init("gpt_clk");
+	mx1_clocks_init(32000);
 }
 
 struct sys_timer mx1ads_timer = {