Yocto 2.3

Move OpenBMC to Yocto 2.3(pyro).

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I50744030e771f4850afc2a93a10d3507e76d36bc
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Resolves: openbmc/openbmc#2461
diff --git a/import-layers/meta-raspberrypi/conf/machine/include/rpi-default-providers.inc b/import-layers/meta-raspberrypi/conf/machine/include/rpi-default-providers.inc
index 078e9d6..5b2658b 100644
--- a/import-layers/meta-raspberrypi/conf/machine/include/rpi-default-providers.inc
+++ b/import-layers/meta-raspberrypi/conf/machine/include/rpi-default-providers.inc
@@ -6,4 +6,5 @@
 PREFERRED_PROVIDER_virtual/libgles2 ?= "${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "userland", d)}"
 PREFERRED_PROVIDER_virtual/libgl ?= "${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "mesa-gl", d)}"
 PREFERRED_PROVIDER_virtual/mesa ?= "${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "mesa-gl", d)}"
+PREFERRED_PROVIDER_libgbm ?= "${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "mesa-gl", d)}"
 PREFERRED_PROVIDER_jpeg ?= "jpeg"