This commit adds a patch for mbuffer that fixes the build with older glibc versions, by making sure we abide by the standards to get the definition of 'struct timespec'. Fixes: http://autobuild.buildroot.net/results/598a3c22dfff7915db4ac2cb1fae0dec67cc0f7e/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>