omap: Start using CONFIG_SOC_OMAP

We want to have just CONFIG_ARCH_OMAP2, 3 and 4. The rest
are nowadays just subcategories of these.

Search and replace the following:

ARCH_OMAP2420		SOC_OMAP2420
ARCH_OMAP2430		SOC_OMAP2430
ARCH_OMAP3430		SOC_OMAP3430

No functional changes.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Thomas Weber <weber@corscience.de>
Acked-by: Sourav Poddar <sourav.poddar@ti.com>
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index 6a658b8..cc5c8d4 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -20,13 +20,13 @@
 u32 omap2xxx_get_sysclkdiv(void);
 void omap2xxx_clk_prepare_for_reboot(void);
 
-#ifdef CONFIG_ARCH_OMAP2420
+#ifdef CONFIG_SOC_OMAP2420
 int omap2420_clk_init(void);
 #else
 #define omap2420_clk_init()	0
 #endif
 
-#ifdef CONFIG_ARCH_OMAP2430
+#ifdef CONFIG_SOC_OMAP2430
 int omap2430_clk_init(void);
 #else
 #define omap2430_clk_init()	0