arm64: dts: ti: k3-j721s2: correct pinmux offset for ospi

Due to non-addressable regions in J721S2 SOC wkup_pmx was split
into four regions from wkup_pmx0 to wkup_pmx3.

Correcting OSPI1 pin mux, which now falls under wkup_pmx1.
Along with that removing unused pin mux for OSPI-0.

Fixes: 6bc829ce ("arm64: dts: ti: k3-j721s2: Fix wkup pinmux range")

Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Reviewed-by: Vaishnav Achath <vaishnav.a@ti.com>
Link: https://lore.kernel.org/r/20230804075341.3858488-1-u-kumar1@ti.com


Signed-off-by: Nishanth Menon <nm@ti.com>