linux/bitmap.h: add bitmap_empty helper

Import this function from Linux.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20240617-b4-qcom-rpmh-v1-1-bd2336923e0a@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
1 file changed