package/rpi-userland: bumps for misc fixes and improvements

A slew of fixes and improvements, specially directed toward, but
not limited to, the sample codes.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/rpi-userland/rpi-userland.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-RPI_USERLAND_VERSION = d2c9f912da389c23ed27e81e940be3540f64fc59
+RPI_USERLAND_VERSION = 5cecd5ae71540a3c11270924251103b3b5c8513a
 RPI_USERLAND_SITE = $(call github,raspberrypi,userland,$(RPI_USERLAND_VERSION))
 RPI_USERLAND_LICENSE = BSD-3c
 RPI_USERLAND_LICENSE_FILES = LICENCE