ath6kl: Release the memory allocated for the firmware
ath6kl: Release the memory allocated for the firmware

Nowhere the firmware memory is freed, free it during
the device destroy process.

Signed-off-by: Raja Mani <a685ff34090a66418ef7e396036418dd8d6d0c79@qca.qualcomm.com>
Signed-off-by: Kalle Valo <7081a7d99b8c74c0698a728df19e3915a995d7e1@qca.qualcomm.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs