[ARM] etherh: continue fixing build failure

Further to 483a2b3a3182abcb7fcea986d7ea13e793bb00b1, also fix:

drivers/net/arm/etherh.c:649: error: 'eth_set_mac_addr' undeclared here (not in a function)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1 file changed