Updates to omap3_evm_defconfig.

This patch updates the defconfig to 2.6.27-rc2 tag.
The updates are based on omap_3430sdp_defconfig.

Fixes the build issue reported earlier:

      LD      init/built-in.o
      LD      .tmp_vmlinux1
    arm-none-linux-gnueabi-ld: no machine record defined
    arm-none-linux-gnueabi-ld: no machine record defined
    make: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>