Change in coreboot[master]: toolchain: Always use GCC for Ada sources

[Nico Huber (Code Review)]

Hello build bot (Jenkins), Martin Roth, Damien Zammit,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/21366

to look at the new patch set (#3).

Change subject: toolchain: Always use GCC for Ada sources
......................................................................

toolchain: Always use GCC for Ada sources

We can't use $(CC) in case it's set to Clang.

TEST=Built one target with Ada sources before and after this change and
     verified that the same compiler commands are emitted.

Change-Id: I9b8ea35352d74b364f09fc12d8d981ca42f8b7c8
Signed-off-by: Nico Huber 
---
M Makefile
M src/lib/gnat/Makefile.inc
M toolchain.inc
3 files changed, 12 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/66/21366/3