staging: prima: v3.2.0.91

Signed-off-by: Ellie <elliekimpot@gmail.com>
exfat: exFAT filesystem support

from https://github.com/dorimanx/exfat-nofuse (Version 1.2.9)

Signed-off-by: Ellie <elliekimpot@gmail.com>
defconfig: update

* Enable PRIMA_WLAN
* Enable EXFAT_FS

Signed-off-by: Ellie <elliekimpot@gmail.com>