target/xtensa: enable xtensa algo support
- Add extra error checking
- Cache PS; lower PS.INTLEVEL to allow breakpoint trigger (LX)
- Xtensa algo support functional on LX per functional flash driver
- Test on NX via manual algo validation
Change-Id: Ie7cff4933979a0551308b382fa33c33c66376f25
Signed-off-by: ianst <ianst@cadence.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8075
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Tested-by: jenkins