trace: ipc_logging: Remove unnecesary bounds check

An unsigned char will always have a size less than 255. Remove this
check as it will always return false. Add header file dependencies for
compilation.

Change-Id: I8a80e230d4b1a2f91e153644d63e8e5892609c07
Signed-off-by: Chris Lew <clew@codeaurora.org>