chromium-x11: Add missing DEPENDS on libxkbcommon

When using a distro without "wayland" in DISTRO_FEATURES, the build
fails due to libxkbcommon being missing. A stock poky, qemux86-64
build on dunfell with DISTRO_FEATURES_remove = "wayland" set in
local.conf results in this error during do_configure:

	| ERROR at //build/config/linux/pkg_config.gni:103:17: Script returned non-zero exit code.
	|     pkgresult = exec_script(pkg_config_script, args, "value")
	|                 ^----------
	| Current dir: /mnt/ssd/yocto/poky/build/tmp/work/core2-64-poky-linux/chromium-x11/96.0.4664.110-r0/chromium-96.0.4664.110/out/Release/
	| Command: python3 /mnt/ssd/yocto/poky/build/tmp/work/core2-64-poky-linux/chromium-x11/96.0.4664.110-r0/chromium-96.0.4664.110/build/config/linux/pkg-config.py xkbcommon
	| Returned 1.
	| stderr:
	|
	| Package xkbcommon was not found in the pkg-config search path.
	| Perhaps you should add the directory containing `xkbcommon.pc'
	| to the PKG_CONFIG_PATH environment variable
	| No package 'xkbcommon' found
	| Could not run pkg-config.
	|
	| See //ui/events/ozone/layout/BUILD.gn:11:3: whence it was called.
	|   pkg_config("xkbcommon") {
	|   ^------------------------
	| See //chrome/test/chromedriver/BUILD.gn:295:7: which caused the file to be included.
	|       "//ui/events/ozone/layout",
	|       ^-------------------------

Add the libxkbcommon dependency so it is set for both wayland and x11
builds.

Signed-off-by: Robert Joslyn <robert.joslyn@redrectangle.org>

Author: bobolopolis

meta-chromium/recipes-browser/chromium/chromium-gn.inc

@@ -72,6 +72,7 @@ DEPENDS += " \
     jpeg \
     libdrm \
     libwebp \
+    libxkbcommon \
     libxslt \
     ninja-native \
     nodejs-native \

meta-chromium/recipes-browser/chromium/chromium-ozone-wayland_96.0.4664.110.bb

@@ -4,7 +4,6 @@ REQUIRED_DISTRO_FEATURES = "wayland"
 
 DEPENDS += "\
         at-spi2-atk \
-        libxkbcommon \
         virtual/egl \
         wayland \
         wayland-native \