remoteproc: xlnx: Fix sram property parsing

remoteproc: xlnx: Fix sram property parsing

As per sram bindings, "sram" property can be list of phandles.
When more than one sram phandles are listed, driver can't parse second
phandle's address correctly. Because, phandle index is passed to the API
instead of offset of address from reg property which is always 0 as per
sram.yaml bindings. Fix it by passing 0 to the API instead of sram
phandle index.

Fixes: 77fcdf51b8ca ("remoteproc: xlnx: Add sram support")
Signed-off-by: Tim Michals <tcmichals@yahoo.com>
Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
Link: https://lore.kernel.org/r/20260204202730.3729984-1-tanmay.shah@amd.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>