Don't allow to specify an ABI for ARM EABI builds: the ABI is implied by the fact we're building for EABI.

/trunk/arch/arm/functions | 19 3 16 0 +++----------------
/trunk/arch/arm/config.in | 9 6 3 0 ++++++---
2 files changed, 9 insertions(+), 19 deletions(-)

 # MIPS specific config options

 config ARCH_mips

     select ARCH_SUPPORTS_BOTH_ENDIAN

     select ARCH_DEFAULT_BE

     select ARCH_SUPPORT_ARCH

     select ARCH_SUPPORT_ABI

     select ARCH_SUPPORT_TUNE

     help

       The MIPS architecture, as defined by:

         http://www.mips.com/