Add coverage pragmas to exclude BITMANIP code
Created by: JeanRochCoulon
To increase the code coverage of CVA6, pragmas are inserted to disable some code lines. Pragmas are related to VCS tool, that is not so nice, but other solutions have been studied wihtout any success (macro approach is complex, function is not supported by all tools)
Signed-off-by: Jean-Roch Coulon jean-roch.coulon@thalesgroup.com