jenkins.sh: Add --disable-libmnl to libosmocore

Libosmocore has a new dependency that doesn't make sense in a 'bare
iron' embedded environment, so let's disable it.

Change-Id: Icfff52601af80d73e61f5c5c3ed89b2d7185ed81
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 35625f1..8810730 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -43,6 +43,7 @@
 ./configure	--enable-static --prefix="$inst/stow/libosmocore" --host=arm-none-eabi \
 		--enable-embedded --disable-doxygen --disable-shared --disable-pseudotalloc \
 		--disable-libsctp --disable-libusb --disable-gb --enable-external-tests \
+		--disable-libmnl \
 		CFLAGS="-Os -ffunction-sections -fdata-sections -nostartfiles -nodefaultlibs -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations -Wno-error=cpp -mthumb -Os -mlong-calls -g3 -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -I /home/laforge/projects/git/osmo-ccid-firmware/sysmoOCTSIM -Wno-error=format" \
 		CPPFLAGS="-D__thread=''"
 make $PARALLEL_MAKE install