omap4: add 4430 ES2.3 support

omap4: add 4430 ES2.3 support

And default to 4430 ES2.3 for unidentified silicon.

Change-Id: I06b0aa9c5f33af25345996cf9d0c994491093096
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>

Conflicts:
	arch/arm/mach-omap2/id.c
	arch/arm/plat-omap/include/plat/cpu.h