Build: Remove +nofp option for Armv6-M from GNUARM

GNUARM doesn't support +nofp option for Armv6-M.
Add an exception for Armv6-M while adding +nofp in GNUARM >= v8.0

Change-Id: I100c8452718496910a210d9b1a18340c35503cb9
Signed-off-by: David Hu <david.hu@arm.com>
1 file changed