libertas: check bounds and only use decimal for sysfs persistent features.

Some persistent settings were using hex and others decimal.  In some cases,
values were set in hex but reported in decimal.  Confusing.

Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1 file changed