The SDAM nvmem driver can be used to access the Shared Direct Access
Memory Module registers in some Qualcomm PMICs.

These registers can specifically be used to store a time offset on
platforms where the PMIC RTC time registers are read-only in order to
allow the RTC time to be updated.
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230202155448.6715-19-johan+linaro@kernel.org