[LINT] Index out of bounds warning when compiling new PMP code

[calebofearth]

In this file: https://github.com/chipsalliance/Cores-VeeR-EL2/blob/main/design/dec/el2_dec_pmp_ctl.sv#L147-L150

Use of (entry_idx+1) generates a compiler warning (in VCS) due to index out of bounds. The conditional statement protects against this index being used illegally, but the lint error should be fixed.

Suggestion:
Change

      assign pmpaddr_lock_next = ((entry_idx+1 < pt.PMP_ENTRIES)
                                  ? (entry_lock_eff[entry_idx+1]
                                     & pmp_pmpcfg[entry_idx+1].mode == TOR)
                                  : 1'b0);

to

    if ((entry_idx+1 < mcu_pt.PMP_ENTRIES))
        assign pmpaddr_lock_next = (entry_lock_eff[entry_idx+1] & pmp_pmpcfg[entry_idx+1].mode == TOR);
    else
        assign pmpaddr_lock_next = 1'b0;