pyramid: Port BT serial drivers from CAF kk_2.7_rb1.31

Signed-off-by: Sultanxda <sultanxda@gmail.com>

Conflicts:
	arch/arm/mach-msm/board-pyramid.c
	arch/arm/mach-msm/include/mach/msm_serial_hs.h
	drivers/tty/serial/Kconfig
	drivers/tty/serial/Makefile
	drivers/tty/serial/msm_serial_hs.c
	drivers/tty/serial/msm_serial_hs_brcm.c