kernel-fitimage.bbclass: Fix 64 bit ENTRYPOINT

64 bit entry point should be passed in 2 literals ( "0x1 0x00008000"
).ENTRYPOINT is assigned with first half only and erroring out as
'command not found' for the second half. Adding quotes while assignment fixes the
issue.

(From OE-Core rev: e886c9c5e1a8ab28388a2e8bbb936ad5eea78615)

Signed-off-by: Vineeth Chowdary Karumanchi <vineethchowz.chowdary@xilinx.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/kernel-fitimage.bbclass

@@ -102,7 +102,7 @@ fitimage_emit_section_kernel() {
 
 	kernel_csum="sha1"
 
-	ENTRYPOINT=${UBOOT_ENTRYPOINT}
+	ENTRYPOINT="${UBOOT_ENTRYPOINT}"
 	if [ -n "${UBOOT_ENTRYSYMBOL}" ]; then
 		ENTRYPOINT=`${HOST_PREFIX}nm vmlinux | \
 			awk '$3=="${UBOOT_ENTRYSYMBOL}" {print "0x"$1;exit}'`