[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/pcm038.c b/arch/arm/mach-mx2/pcm038.c
index 534fd9a..63cdef8 100644
--- a/arch/arm/mach-mx2/pcm038.c
+++ b/arch/arm/mach-mx2/pcm038.c
@@ -230,8 +230,7 @@
 
 static void __init pcm038_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("gpt_clk.0");
+	mx27_clocks_init(26000000);
 }
 
 struct sys_timer pcm038_timer = {