powerpc/85xx: Adding DCSR node to dtsi device trees

Adding new device tree binding file for the DCSR node.  Modifying device
tree dtsi files to add DCSR node for P2041, P3041, P4080, & P5020.

Signed-off-by: Stephen George <stephen.george@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
9 files changed