Staging: Netlogic: Add nlm_cop2_enable/restore function name change

The function name nlm_cop2_enable() and nlm_cop2_restore() in
file "netlogic/xlr/fmn.c" has been renamed to nlm_cop2_enable_irqsave
and nlm_cop2_disable_irqrestore respectively in commit "64f6ebe6
MIPS: Netlogic: rename nlm_cop2_save/restore".

This patch takes care of these changes

Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>