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(-)

# Compute x86_64-specific values

CT_DoArchValues() {

    # The architecture part of the tuple:

    CT_TARGET_ARCH="${CT_ARCH}"

}