mhi: core: log device EE and device state inside intvec handler

For debugging purpose, always print the current execution
environment and device state whenever intvec handler is triggered.

CRs-Fixed: 2373857
Change-Id: Idf961573dbcd12c0797f94095a828dd5c675c6ef
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>