wandboard: Fix sparse warning

Add a prototype for board_phy_config() to fix the following sparse warning:

wandboard.c:200:5: warning: symbol 'board_phy_config' was not declared. Should it be static?

Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2 files changed