Generate OCM node compatible with Linux driver

Instead of generating OCM address range which is fixed
to 0 or 0xFFFc0000, generate ocm MMIO config IP.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
axivdma: Make boolean DT properties real bools

This patch makes the DT properties, include-sg
and include-dre as boolean.
This is the change following the commit on linux,
"dma: xilinx: vdma: Make boolean DT properties real bools"
 (sha1: c819c9f7bf7648a33e0a039e1569cf751f865127)

Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>