DIAG service responds to "get log mask" command sent by tools. This was typically responded to by modem. On modem less devices, this command still needs response. Adding support on Linux processor for this command. CRs-Fixed: 388740 Signed-off-by: Shalabh Jain <shalabhj@codeaurora.org> Change-Id: I4516acd1196a1459a56175df19a3bca19389cc83 Signed-off-by: Neha Pandey <nehap@codeaurora.org>