MLK-19899 spi: lpspi: CLK pin becomes low when CR_RST=1

MLK-19899 spi: lpspi: CLK pin becomes low when CR_RST=1

Remove Reset operation in fsl_lpspi_config(). This RST may cause both CLK and
CS pins go from high to low level under cs-gpio mode.
Add fsl_lpspi_reset() function after one message transfer to clear all
flags in use.

Signed-off-by: Xiaoning Wang <xiaoning.wang@nxp.com>
Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>