secimage: Don't link in gmp library

secimage does not use libgmp, so don't link it in.
(Otherwise linking fails if the library is not installed)

Change-Id: I24af21c7754ecd0109f3e86669fa34fa6991d7fe
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/11079
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/util/broadcom/secimage/Makefile b/util/broadcom/secimage/Makefile
index 8d050fe..58f3bc1 100644
--- a/util/broadcom/secimage/Makefile
+++ b/util/broadcom/secimage/Makefile
@@ -17,7 +17,7 @@
 RM = rm
 CFLAGS += -Wall -g
 
-LIBS = -lgmp -lssl -lcrypto
+LIBS = -lssl -lcrypto
 
 %.o : %.c
 	$(CC) -c $(CFLAGS) -o $@ $<
diff --git a/util/broadcom/secimage/Makefile.inc b/util/broadcom/secimage/Makefile.inc
index ee9a480..a171a42 100644
--- a/util/broadcom/secimage/Makefile.inc
+++ b/util/broadcom/secimage/Makefile.inc
@@ -4,7 +4,7 @@
 secimageobj += misc.o
 secimageobj += sbi.o
 
-LIBS = -lgmp -lssl -lcrypto
+LIBS = -lssl -lcrypto
 
 additional-dirs += $(objutil)/broadcom/secimage