staging: wlags49_h2: wl_if.h: fixes spaces-before-tabs issue

This commit fixes a spaces-before-tabs problem that was reported by
the checkpatch.pl tool.

Signed-off-by: Johan Meiring <johanmeiring@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>