qcom: pil: Move the IMEM location for disabling timeouts

Currently, the PIL driver expects the debug cookie for disabling
the check for subsystem bootup timeouts in the PIL's standard
IMEM location. However, since the bootloader also loads the firmware,
it's possible that it can use this location to set the cookie that's
needed for ramdump parsers. As a result, the original timeout cookie,
that's usually set before bootloader even begins, is overwritten.
Hence, move the timeout cookie to a different location to avoid this
conflict.

Change-Id: I2e368e9fbd7e996e2a4290b75818fae8cb9277be
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>