- Fix incorrect setting in the edge interrupt acknowledgement API
- Avoid executing the service call dispatcher in the U-mode ecall,
rather execute `mret` to jump it
- Avoid `t1` register corruption when processing `ecall`
- Switch back to the bootloader stack from TEE stack after the
execution of the entire TEE initialization routine
- Decreased from 32KB to 24KB, keeping in mind the current maximum TEE heap
usage and some overhead
- Make the TEE panic handler logs concise, saving some DRAM
Laukik Hase