Convert to new override syntax

This is the result of automated script conversion:

scripts/contrib/convert-overrides.py <oe-core directory>

converting the metadata to use ":" as the override character instead of "_".

(From OE-Core rev: 42344347be29f0997cc2f7636d9603b1fe1875ae)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/cryptodev/cryptodev-linux_1.12.bb

@@ -9,5 +9,5 @@ do_install() {
 	install -D ${S}/crypto/cryptodev.h ${D}${includedir}/crypto/cryptodev.h
 }
 
-ALLOW_EMPTY_${PN} = "1"
+ALLOW_EMPTY:${PN} = "1"
 BBCLASSEXTEND = "native nativesdk"