ARM: zImage: Use the right 'size' binary

Some host platforms have native 'size' binaries that cannot grok arm
binaries for some reason.  Check to see if there is a
$(CROSS_COMPILE)size binary available and use that instead.

Change-Id: Ic0dedbad671e10cef70bc5603b8b004d054ad12e
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
1 file changed