gcc-cross-canadian: Fixed packaging warnings.

Removed non-shipped empty directories:
 -${prefix}/${TARGET_SYS}
 -${libdir}/../lib
 -${prefix}/include

(From OE-Core rev: 04a08bf7e8d7cf4b6b844a88173b5d1d7917c8af)

Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-package-sdk.inc

@@ -46,6 +46,13 @@ do_install () {
 	rm -f ${D}${libdir}/../lib/libiberty.a
 	rm -f ${D}${libdir}/libiberty.a
 
+	# Cleanup empty directories which are not shipped
+	# we use rmdir instead of 'rm -f' to ensure the directories are empty
+	rmdir ${D}${libdir}/../lib
+	rmdir ${D}${prefix}/${TARGET_SYS}/lib
+	rmdir ${D}${prefix}/${TARGET_SYS}
+	rmdir ${D}${includedir}
+
 	# Insert symlinks into libexec so when tools without a prefix are searched for, the correct ones are
 	# found.
 	dest=${D}${libexecdir}/gcc/${TARGET_SYS}/${BINV}/