[PATCH 1/1] firmware: add a function to load optional firmware

Currently the firmware loader only exposes one silent path for querying optional firmware, and that is request_firmware_direct(). This function also disables the usermodehelper fallback which might not always be the desired behaviour. This patch introduces request_firmware_optional(), which will

[PATCH 1/1] firmware: add a function to load optional firmware

Currently the firmware loader only exposes one silent path for querying optional firmware, and that is request_firmware_direct(). This function also disables the usermodehelper fallback which might not always be the desired behaviour. This patch introduces request_firmware_optional(), which will