ARM: edma: Get IP configuration from HW (number of channels, tc, etc)
ARM: edma: Get IP configuration from HW (number of channels, tc, etc)

From CCCFG register of eDMA3 we can get all the needed information for the
driver about the IP:
Number of channels: NUM_DMACH
Number of regions: NUM_REGN
Number of slots (PaRAM sets): NUM_PAENTRY
Number of TC/EQ: NUM_EVQUE

In case when booted with DT or the queue_priority_mapping is not provided
set up a default priority map.

Signed-off-by: Peter Ujfalusi <e5c0b4cdf99ae1d408b9c497159e74b54e02e008@ti.com>
Acked-by: Joel Fernandes <79b252d5caac623cbab67c059402178ee09b8945@ti.com>
Signed-off-by: Sekhar Nori <946cfb81282bb55c59f600e7ee3d3b2c6973f7a3@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs