gcc-cross: Make gcc-cross-initial as the only intermediate gcc stage

gcc-cross: Make gcc-cross-initial as the only intermediate gcc stage

Now glibc can be compiled with gcc-cross-initial therefore prepare
the stage to drop gcc-cross-intermediate

Also drop arm-nolibfloat.patch should not be needed anymore
half of changes in this patch are meant for OABI which we dont
use anymore

(From OE-Core rev: 30617bde61a3b0a0944b49a0c9fb7159dacbb19f)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>