arm64: dts: ti: k3-j7200-common-proc-board: Modify Pinmux for wkup_uart0 and mcu_uart0

WKUP_PADCONFIG registers for wkup_uart0 and mcu_uart0 lies
under wkup_pmx2 for J7200. Thus, modify pinmux for both
of them.

Fixes: 3709ea7f ("arm64: dts: ti: k3-j7200-common-proc-board: Add uart pinmux")
Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
Link: https://lore.kernel.org/r/20240214105846.1096733-2-b-kapoor@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>