userland: Do not provide libgl

libgl is actually provided by mesa-gl and this
casued unneeded conflict between these two
packages resulting in sato image reporting missing
libGL.so.1

Signed-off-by: Khem Raj <raj.khem@gmail.com>

recipes-graphics/userland/userland_git.bb

@@ -10,7 +10,7 @@ PR = "r5"
 PROVIDES = "virtual/libgles2 \
             virtual/egl"
 
-RPROVIDES_${PN} += "libgles2 libgl"
+RPROVIDES_${PN} += "libgles2 egl"
 
 COMPATIBLE_MACHINE = "raspberrypi"