exFAT support

Signed-off-by: flar2 <asegaert@gmail.com>
defconfig: Add F2FS/exFAT
intelliactive: tune for APQ8064 devices

Signed-off-by: Paul Reioux <reioux@gmail.com>
intellidemand: minor clean up and tailor for APQ8064 devices

Signed-off-by: Paul Reioux <reioux@gmail.com>