staging: bcm: fixed warning about no and prohibited space in InterfaceIdleMode.c.

This patch fixes all the warning related to spacing issues
found by checkpatch.pl script in InterfaceIdleMode.c

Signed-off-by: Gokulnath Avanashilingam <Gokulnath.Avanashilingam@in.bosch.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>