cc/gcc: update Linaro GCC revisions to 2012.04

Update Linaro GCC with the latest available revisions.

The 4.7 revision is also released, but the infrastructure is not yet ready for
it in CT-NG.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>

# Alpha specific configuration file

## select ARCH_SUPPORTS_32

## select ARCH_DEFAULT_32

## select ARCH_USE_MMU

## select ARCH_SUPPORTS_WITH_CPU

## select ARCH_SUPPORTS_WITH_TUNE

##

## help The Alpha architecture.