drivers/exfat: add Samsung's open source exFat module version 1.2.4

Signed-off-by: Paul Reioux <reioux@gmail.com>
drivers/Makefile: add exFat support

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

Conflicts:
	drivers/Makefile

Change-Id: I88466c93ca1ab56a43fa9ee13bf1f48d084aed1a
fastcharge: initial Nexus 5 adaptation

added custom charge levels for better control over fastcharge

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

Signed-off-by: DooMLoRD <metoo.mememe@gmail.com>

Conflicts:
	arch/arm/mach-msm/Makefile

Change-Id: Ic48959a66525ff967ca6bd92da0e1f087f2a9958

Conflicts:
	arch/arm/mach-msm/Makefile
	build-kernel.sh
fastcharge: initial port to Xperia Z1
fastcharge: some more fixes specific to Xperia Z1
defconfig: enable fastcharge

Change-Id: I0acab76cc0b39bc33dff08c4b9d8762446f7aa35