Add provider for virtual/tegra-gbm-backend

Both the tegra-udrm-gbm and tegra-libraries-gbm-backend work to
provide buffers for libgbm (they are gbm backends).

This change adds a provider so that either implementation can be
chosen, preferring NVIDIA's official binary version.

Signed-off-by: Kurt Kiefer <kekiefer@gmail.com>

conf/machine/include/tegra-common.inc

@@ -31,6 +31,7 @@ PREFERRED_PROVIDER_v4l-utils = "${@'v4l-utils' if 'openembedded-layer' in d.getV
 PREFERRED_PROVIDER_virtual/bootlogo ?= "bootlogo-prebuilt"
 PREFERRED_PROVIDER_tensorrt-plugins ?= "tensorrt-plugins-prebuilt"
 PREFERRED_PROVIDER_tensorrt-trtexec ?= "tensorrt-trtexec-prebuilt"
+PREFERRED_RPROVIDER_tegra-gbm-backend ?= "tegra-libraries-gbm-backend"
 
 IMAGE_ROOTFS_ALIGNMENT ?= "4"
 TEGRA_BLBLOCKSIZE ?= "${@int(d.getVar('IMAGE_ROOTFS_ALIGNMENT')) * 1024}"

recipes-bsp/tegra-binaries/tegra-libraries-gbm-backend_35.1.0.bb

@@ -7,6 +7,8 @@ require tegra-debian-libraries-common.inc
 
 MAINSUM = "86a9ea9b0674801670d9d78a7ce7db9c3f3db3d8949b0604c84aeb75214fb651"
 
+RPROVIDES:${PN} += "tegra-gbm-backend"
+
 TEGRA_LIBRARIES_TO_INSTALL = "\
     tegra/libnvidia-allocator.so.1 \
 "

recipes-graphics/mesa/mesa_%.bbappend

@@ -2,7 +2,7 @@ EXTRA_OEMESON:append:tegra = " -Dglvnd=true"
 DEPENDS:append:tegra = " libglvnd"
 PROVIDES:tegra = "virtual/mesa virtual/libgbm"
 
-RDEPENDS:libgbm:append:tegra = " tegra-udrm-gbm"
+RDEPENDS:libgbm:append:tegra = " tegra-gbm-backend"
 
 # Workaround for the do_install:append() present in the OE-Core recipe
 do_install:prepend:tegra() {

recipes-graphics/mesa/tegra-udrm-gbm_1.0.2.bb

@@ -3,6 +3,8 @@ HOMEPAGE = "https://github.com/oe4t/tegra-udrm-gbm"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=c43c2c3b83cc7c8460566fb6da10f02a"
 
+RPROVIDES:${PN} += "tegra-gbm-backend"
+
 DEPENDS = "mesa libdrm"
 RDEPENDS:${PN} = "tegra-libraries-gbm"