package/rpi-userland: include TARGET_CFLAGS to the overloaded CFLAGS

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/rpi-userland/rpi-userland.mk

@@ -10,7 +10,8 @@ RPI_USERLAND_LICENSE = BSD-3c
 RPI_USERLAND_LICENSE_FILES = LICENCE
 RPI_USERLAND_INSTALL_STAGING = YES
 RPI_USERLAND_CONF_OPTS = -DVMCS_INSTALL_PREFIX=/usr \
-	-DCMAKE_C_FLAGS="-DVCFILED_LOCKFILE=\\\"/var/run/vcfiled.pid\\\""
+	-DCMAKE_C_FLAGS="$(TARGET_CFLAGS) \
+		-DVCFILED_LOCKFILE=\\\"/var/run/vcfiled.pid\\\""
 
 RPI_USERLAND_PROVIDES = libegl libgles libopenmax libopenvg