kernel.bbclass: fix do_sizecheck() comparison

The routine do_sizecheck() was historically needed by legacy
devices with limited flash memory.
The lowest extreme is probably with Zaurus collie having exactly
1024*1024 = 1048576 bytes for the kernel partition.

In the years the KERNEL_IMAGE_MAXSIZE has been converted to kilobytes
thus rounded so we have now KERNEL_IMAGE_MAXSIZE_collie = "1024".

The effect is that now the check fails because we hit curiously this
 | WARNING: This kernel zImage (size=1024(K) > 1024(K)) is too big for...
even though zImage is 1047288 bytes (kernel + kexecboot-klibc-initramfs).

Fix this case using test -gt (greater) instead of -ge (greater or equal).

(From OE-Core rev: 254ca956d63b4ce6aa294213b60bb943f9f3a9e6)

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/kernel.bbclass

@@ -714,7 +714,7 @@ do_sizecheck() {
 		at_least_one_fits=
 		for imageType in ${KERNEL_IMAGETYPES} ; do
 			size=`du -ks ${B}/${KERNEL_OUTPUT_DIR}/$imageType | awk '{print $1}'`
-			if [ $size -ge ${KERNEL_IMAGE_MAXSIZE} ]; then
+			if [ $size -gt ${KERNEL_IMAGE_MAXSIZE} ]; then
 				bbwarn "This kernel $imageType (size=$size(K) > ${KERNEL_IMAGE_MAXSIZE}(K)) is too big for your device."
 			else
 				at_least_one_fits=y