NFC: Enable DMA and CLK_REQ gpio config issue fix

Use DMA to read data from I2C. Fix clk_req setup flow
issue and change clk_req pin to be input mode.

Change-Id: I93f7ea3c2989d5fa4c145834a493b71470ea2a1e
Acked-by: Sheng-Wen Hsu <shengwen@qti.qualcomm.com>
Signed-off-by: Puneet Mishra <puneetm@codeaurora.org>