Use RPM_PREFER_ELF_ARCH to instead of RPM_PREFER_COLOR as rpm upstream
suggested, and use "4" to instead of "3" since it is a bit mask (not
enumeration), so we need "4" here.
Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>