[ac_range_check,doc] Testplan for ac_range_check_smoke

[martin-velay]

After having mostly covered the smoke test with this PR #26513.

I wonder if the testplan for ac_range_check_smoke is correct:

#	Stimulus	Status
1	Assert range_check_overwrite_i to MuBi8False	OK
2	Randomize RANGE_BASE and RANGE_LIMIT	OK
3	Randomize RANGE_PERM and set the enable bit to 1	OK
4	Set read_perm and write_perm to 0xFFFF	OK
5	TLUL requests where ... RACL role bit is set	Does it matters for this smoke test as read_perm and write_perm are always 0xFFFF?

#	Checks	Status
6	If a request falls ... TLUL error is returned	Could you elaborate on the expected TLUL error? Where is it expected to be reported?
7	Read requests return all zero as data	Is it true? I think, the request should be filtered and noting should be returned at this level. No?
8	Read and Execute request return the expected data	At block level, I believe any requests (R/W/X) should go through. Isn't it?