lrdp-v2: Update arch while parsing scandumps on 32 bit targets

Architecture format was not getting passed while parsing scandumps for 32 bit targets
and resulting in parsing debug image. Added support to pass this info for 32 bit
devices while parse scandump

Change-Id: I9814921303bcf636e4ea666eb50b3add48de6b31
Signed-off-by: avijayku <avijayku@codeaurora.org>