.gitignore: Ignore Python object files

Ignore .pyc files, such as util/ipqheader/mbn_tools.pyc

Change-Id: Ic539b7ac0b5263b9dc2fa37c03e79303ea92a9da
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/15923
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>

.gitignore

@@ -53,6 +53,7 @@ site-local
 *.elf
 *.o
 *.out
+*.pyc
 *.swp
 
 # Development friendly files