soc: qcom: memory_dump_v2: add msm_dump_table_version api

Add msm_dump_table_version() api to allow clients to support both
the new and old memory dump format by registering using the
corresponding apis depending upon the version.

Change-Id: I53b1cd33a8b79d737c34360ef11d34602a728993
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>