[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-mx3/mx31moboard.c b/arch/arm/mach-mx3/mx31moboard.c
index c29098a..3d2773e 100644
--- a/arch/arm/mach-mx3/mx31moboard.c
+++ b/arch/arm/mach-mx3/mx31moboard.c
@@ -120,8 +120,7 @@
 
 static void __init mx31moboard_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 struct sys_timer mx31moboard_timer = {