Memory controller drivers for v5.9 The drivers/memory directory with memory controller drivers, over the last days grew in numbers but lacked any coordinated care. The generic part (device tree helpers) were pulled in through various trees, depending on driver needs. The patchset is a first try to improve code quality of memory controller drivers. Mostly these are non-intrusive fixes for GCC, checkpatch or sparse warnings. This also fixes missing SPDX tags or improves generic code quality (whitespace, const correctness). Last commit appoints also Krzysztof Kozlowski as a maintainer.