ARM: OMAP2: Use omap_globals for CPU detection for multi-omap

This allows to get rid of the ifdefs and will allow simpler
CPU detection in the future.

Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/plat-omap/include/mach/cpu.h b/arch/arm/plat-omap/include/mach/cpu.h
index 05aee0e..e046418 100644
--- a/arch/arm/plat-omap/include/mach/cpu.h
+++ b/arch/arm/plat-omap/include/mach/cpu.h
@@ -346,9 +346,14 @@
 		get_sil_revision(system_rev)
 
 /* Various silicon macros defined here */
+#define OMAP242X_CLASS		0x24200000
 #define OMAP2420_REV_ES1_0	0x24200000
 #define OMAP2420_REV_ES2_0	0x24201000
+
+#define OMAP243X_CLASS		0x24300000
 #define OMAP2430_REV_ES1_0	0x24300000
+
+#define OMAP343X_CLASS		0x34300000
 #define OMAP3430_REV_ES1_0	0x34300000
 #define OMAP3430_REV_ES2_0	0x34301000
 #define OMAP3430_REV_ES2_1	0x34302000