dt-bindings: ddr: Rename lpddr2 directory
Change directory name to be ready for new types of memories.
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
authored by