htm: Fix HTM naming
htm: Fix HTM naming

Somehow HTM started not putting the correct indexes and it started
becoming impossible to know which htm was being used.

Signed-off-by: Cyril Bur <99dea9acac81454e66986aa60f5d078ee8370e4c@gmail.com>

open-power/pdbg,open-power/pdbg,open-power/pdbg