The 'qpic_common' module provides some generic functions which are usable by both the 'qcom_nandc' and by the 'spi-qpic-snand' driver. Move more code from the 'qcom_nandc' driver to there in order to allow using those also from the 'spi-qpic-snand' driver. No functional changes. Signed-off-by: Gabor Juhos <j4g8y7@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>