soc: qcom: ramdump: Fix 'complete ramdump' collection

The PIL driver sets up the mappings for the segments' address
based on the size of the segments. However, for the case of
'complete ramdump' collection, the ramdump driver re-sizes the
segments, thus causing a mismatch in the mappings created by
PIL driver. Hence, fix this by only initializing the physical
address in the PIL driver and let the ramdump driver take
care of the re-sizing and mapping.

Change-Id: Ia07eae2b1873f1fc9d3e9a1c8089f14ffd37dcd3
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>