input: sensors: add BOSCH bma2x2 accelerometer driver

Initial version of BOSCH bma2x2 accelerometer driver.
add new file.

Change-Id: I2343fa5b46ffb00b560d0b25ed93ad91e0d611b9
Signed-off-by: Cloud Chen <Ji.chen@bosch-sensortec.com>
Git-commit: 82e7c6b1cf460aeafe6ccdccc5c35f75ad214ee9
Git-repo: https://github.com/BoschSensortec/Linux_Kernel_Drivers


[bingzhec@codeaurora.org: merging with existing Kconfig and
Makefile, fix recursive dependency error]
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>