i2c: Add support for Qualcomm I2C driver

Add support for Qualcomm I2C QUP driver which is inspired from
corresponding driver in Linux: drivers/i2c/busses/i2c-qup.c.

Currently this driver only support FIFO polling mode which is sufficient
to support devices like eeprom, rtc etc.

Co-developed-by: Mike Worsfold <mworsfold@impinj.com>
Signed-off-by: Mike Worsfold <mworsfold@impinj.com>
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>