memory: tegra20-emc: Support matching timings by LPDDR2 configuration

memory: tegra20-emc: Support matching timings by LPDDR2 configuration

[ Upstream commit 131dd9a436d8f6dbaf3d9597803765d271b2fc19 ]

ASUS Transformer TF101 doesn't provide RAM code and in this case memory
timings should be selected based on identity information read out from
SDRAM chip. Support matching timings by LPDDR2 configuration.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20211006224659.21434-10-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Stable-dep-of: b9784e5cde1f ("memory: tegra20-emc: fix an OF node reference bug in tegra_emc_find_node_by_ram_code()")
Signed-off-by: Sasha Levin <sashal@kernel.org>