[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>
diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c
index 7721c47..536bf64 100644
--- a/arch/arm/mach-mx2/mx27ads.c
+++ b/arch/arm/mach-mx2/mx27ads.c
@@ -263,8 +263,7 @@
 	if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
 		fref = 27000000;
 
-	mxc_clocks_init(fref);
-	mxc_timer_init("gpt_clk.0");
+	mx27_clocks_init(fref);
 }
 
 struct sys_timer mx27ads_timer = {