EmbeddedPkg: remove mention of ARMGCC

We are going to remove the ARMGCC toolchains, so replace any references
to it with its replacement GCC48.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18208 6f19259b-4bc3-4df7-8a09-765794883524
2 files changed