board: ti: am572x-idk: Update pinmux using latest PMT

Update the board pinmux for AM572x-IDK board using latest PMT[1] and the
board files named am572x_idk_v1p3b_sr2p0 that were autogenerated on
20th October, 2016 by "Steve Kipisz <s-kipisz2@ti.com>" and
"Tom Johnson <thjohnson@ti.com>".

[1] https://dev.ti.com/pinmux/app.html#/default/



Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>