gpiolib: Re-use bitmap_fill() instead of open coded loop

Re-use bitmap_fill() instead of open coded loop for setting an area of
bits in a bitmap.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed