Example: Update example partition

- Add load info and intermedia files to example partition.
- Update the IRQ API from 'tfm_enable_irq' to 'psa_irq_enable'.
- Update the readme file, remove the 'tfm_partition_ipc' attribute.

Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
Change-Id: I426936b2b625b66a302c5b429c800ae8512642d9
3 files changed