vim: provide xxd

The xxd tool is quite useful by itself. For example, building U-boot
using the CONFIG_USE_DEFAULT_ENV_FILE option requires that the host
provides xxd, and it's nicer to be able to put xxd-native rather than
vim-native in that recipe's dependencies.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/vim/vim_8.1.0172.bb

@@ -111,3 +111,5 @@ ALTERNATIVE_LINK_NAME[vim] = "${bindir}/vim"
 ALTERNATIVE_PRIORITY = "100"
 
 BBCLASSEXTEND = "native"
+
+PROVIDES += "xxd"