linux-phytec-ti

arm: dts: am57xx-phycore-rdk: fix mcasp1 configuration

MCASP1 was originally implemented in am57xx-pcm-948.dtsi
as it was an unsupported in TI's devicetree files.

Now that they have added general support, we only modify
the node for two things:

1) To use the correct size for the MCASP1 data port (MCASP1_DAT).
   The proper size is 4 MiB and is incorrectly configured as 4 KiB
   for the SOC devicetree.

2) To align the AXR hardware address offsets specified
   in the davinci-mcasp driver with our chosen AXR14 and AXR15
   pins for the MCASP1 bus. This is only used when the data port
   is not configured so it may be revisited in the future.

Signed-off-by: Russell Robinson <rrobinson@phytec.com>