target-xtensa: fix CCOUNT for conditional branches

target-xtensa: fix CCOUNT for conditional branches

Taken conditional branches fail to update CCOUNT register because
accumulated ccount_delta is reset during translation of non-taken
branch. To fix it only update CCOUNT once per conditional branch
instruction translation.

This fixes guest linux freeze on LTP waitpid06 test.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
(cherry picked from commit d865f307399441919d6646545b7735e57920da04)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>