Test: Convert TFM_IPC_ISOLATION_2_TEST_READ_ONLY_MEM to positive test

Call tfm_hal_memory_has_access API to convert the negative test case
TFM_IPC_ISOLATION_2_TEST_READ_ONLY_MEM into positive test case.
This test only enabled when isolation level greater than 1.

Change-Id: I7c358b86c484c74858fc0b1c7280df47966f6672
Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
3 files changed