drivers/net/at91_emac.c: Fix GCC 4.6 warning

Fix:
at91_emac.c: In function 'at91emac_write_hwaddr':
at91_emac.c:477:15: warning: variable 'dev' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Anatolij Gustschin <agust@denx.de>
1 file changed