ral-registers - MMIO abstraction using a macro-based API

Age	Commit message (Collapse)	Author
2022-12-07	Expand macros testing for register scalars, arrays	Ian McIntyre
	The parent commit extends the macros to support both scalar and array register access. This commit extends the macro test suite to test both scalar and array register access. It also tests that you can use things that deref to a register block, including normal references, deref smart pointers, and raw pointers. The tests cases carry over the shadowed variable tests.
2021-09-29	Begin testing read, write, modify macros	Ian McIntyre
	Ported from the imxrt-ral core test suite. Demonstrate that there are no "unused variable" warnings in tests by denying warnings for select tests. These tests show that #2 is resolved.