Change in flashrom[master]: Makefile: move c compiler check to the top

[Thomas Heijligen (Code Review)]

Attention is currently required from: Nico Huber, Angel Pons.
Hello Nico Huber, Angel Pons,

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

https://review.coreboot.org/c/flashrom/+/58616

to look at the new patch set (#2).

Change subject: Makefile: move c compiler check to the top
......................................................................

Makefile: move c compiler check to the top

Cleanup the compiler target by outsourcing the test to an own variable.

This is in preparation for further changes.

Change-Id: I3d6f08ef030744c772b4ec0dc2c9e614fb90461d
Signed-off-by: Thomas Heijligen 
---
M Makefile
A Makefile.d/cc_test.c
M Makefile.include
3 files changed, 14 insertions(+), 15 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/16/58616/2