net: brocade: bna: Fix wrong function name in comments

Fixes the following W=1 kernel build warning(s):

 drivers/net/ethernet/brocade/bna/bfa_cee.c:91: warning: expecting prototype for bfa_cee_get_attr_isr(). Prototype was for bfa_cee_get_stats_isr() instead

Cc: Rasesh Mody <rmody@marvell.com>
Cc: Sudarsana Kalluru <skalluru@marvell.com>
Cc: GR-Linux-NIC-Dev@marvell.com
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>