baytrail: com1 is a reserved word in windows, rename to uart.c

Coreboot was failing to build on windows because com1
is a reserved keyword under windows.  I'm renaming
it to soc/intel/baytrail/romstage/uart.c.

BUG=None
BRANCH=None
TEST=Built and verified uart.c was compiled in.

Change-Id: I9d1fb65944016e43a08f5c6517d86dc66993b973
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
2 files changed