[PATCH] mv643xx_eth: Remove needless mask of extended intr register

All interrupts controlled by the extended mask register are also
masked by a bit in the main mask register, so there is no need to
directly manipulate the extended mask register.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
 mv643xx_eth.c |   81 ++++++++++++++++++----------------------------------------
 1 file changed, 26 insertions(+), 55 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>