ram: k3-ddrss: Enable vtt regulator if present
Attempt to get and enable a vtt regulator if one is provided from the dts. If we do not find one, continue as not all platforms have this. Signed-off-by: NNishanth Menon <nm@ti.com> Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com> Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
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