[ARM] Feroceon: pass proper -mtune argument to gcc

Compilation for the Feroceon core should use -mtune=marvell-f.  This is
available in Code Sourcery's 2008Q3 release at the moment. Otherwise
fall back to -mtune-=xscale.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
1 file changed