meta-openembedded/all: adapt to UNPACKDIR changes

Please see
https://git.yoctoproject.org/poky/commit/?id=4dd321f8b83afecd962393101b2a6861275b5265
for what changes are needed, and sed commands that can be used to make them en masse.

I've verified that bitbake -c patch world works with these, but did not run a world
build; the majority of recipes shouldn't need further fixups, but if there are
some that still fall out, they can be fixed in followups.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/classes/fitimage.bbclass

@@ -127,8 +127,7 @@ python __anonymous() {
             d.setVar('EXTERNAL_KERNEL_DEVICETREE', '${RECIPE_SYSROOT}/boot/devicetree')
 }
 
-S = "${WORKDIR}/sources"
-UNPACKDIR = "${S}"
+S = "${UNPACKDIR}"
 B = "${WORKDIR}/build"
 
 #