Remove the -Os flag

Upstream-Status: Inappropriate [configuration]

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Index: git/Makefile
===================================================================
--- git.orig/Makefile
+++ git/Makefile
@@ -18,7 +18,7 @@ CONFIG_LOCALVERSION =
 CPPFLAGS = -I libfdt
 WARNINGS = -Werror -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
 	-Wstrict-prototypes -Wmissing-prototypes
-CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
+CFLAGS = -g -fPIC -Werror $(WARNINGS)
 
 BISON = bison
 LEX = flex