diag: dci: Parse data till the end for events read over smd

Currently while running event stress commands without payload
the parsing for the last event report is not being done. This
leads to less number of events reported. This patch ensures that
the parsing happens till the end, for events with or without
payload.

Change-Id: I785ac431a40327896534b6389ff09c6ffc481546
Signed-off-by: Katish Paran <kparan@codeaurora.org>