SPM: Remove *TFM* IRQ APIs for IPC Model

The following two APIs are intended to be replaced by the
PSA API equivalence:
 - tfm_spm_enable_irq
 - tfm_spm_disable_irq

Change-Id: Id27a15b9fcf7dcaf0fe6e767ed170b07a867809b
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
6 files changed