Documentation: devicetree: Add pl353 smc device tree binding info

Added pl353-smc.txt under device tree bindings documentation

Signed-off-by: Punnaiah Choudary Kalluri <punnaia@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
mmc/host/sdhci-of-arasan.c: Use signed formatting in error messages

"ret" is a signed int, so use "%d" in format strings instead of "%u".
This prevents cryptic codes in error messages like this:
sdhci-arasan e0101000.sdhci: platform register failed (4294966779)

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
APF: delete unused code related to xlnk_event_trace

The xlnk_event_trace code was used for profiling and is not used now.
One line of the code writes a value to an SLCR register that causes
issues for non-SMP kernel

Signed-off-by: S Mohan <s.mohan@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>