mtd: rawnand: qcom: Add qcom prefix to common api

Add qcom prefix to all the api which will be commonly
used by spi nand driver and raw nand driver.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>