pinctrl: Ingenic: JZ4755 bug fixes

pinctrl: Ingenic: JZ4755 bug fixes

Fixes UART1 function bits and MMC groups typo.

For pins 0x97,0x99 function 0 is designated to PWM3/PWM5
respectively, function is 1 designated to the UART1.

Diff from v1:
 - sent separately
 - added tag Fixes

Cc: stable@vger.kernel.org
Fixes: b582b5a434d3 ("pinctrl: Ingenic: Add pinctrl driver for JZ4755.")
Tested-by: Siarhei Volkau <lis8215@gmail.com>
Signed-off-by: Siarhei Volkau <lis8215@gmail.com>
Link: https://lore.kernel.org/r/20221016153548.3024209-1-lis8215@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>