[coreboot-gerrit] Change in em100[master]: Enable and fix compiler warnings

[Stefan Reinauer (Code Review)]

Hello Angel Pons, build bot (Jenkins), Patrick Georgi, Martin Roth,

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

https://review.coreboot.org/c/em100/+/37135

to look at the new patch set (#10).

Change subject: Enable and fix compiler warnings
......................................................................

Enable and fix compiler warnings

Remove -Wno-sign-compare -Wno-discarded-qualifiers and fix all
warnings in the code.

Signed-off-by: Stefan Reinauer 
Change-Id: Idf8e6364a8ebba78b7c793f745048bffbc03e3ef
---
M Makefile
M chips.c
M curl.c
M em100.c
M em100.h
M firmware.c
M hexdump.c
M spi.c
M tar.c
M trace.c
10 files changed, 33 insertions(+), 35 deletions(-)

git pull ssh://review.coreboot.org:29418/em100 refs/changes/35/37135/10