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soc/common/smbus: Add support for reading spd data via smbus for DDR5
DDR5 uses a Serial Presence Detect EEPROM with hub function (SPD5 hub device) to store the spd data. This CL adds support to read the spd5 hub device via smbus. BUG=b:180458099 TEST=Boot adlrvp DDR5 board to kernel Signed-off-by: Meera Ravindranath <meera.ravindranath@intel.com> Change-Id: Ic5e6c58f255bef86b68ce90a4f853bf4e7c7ccfe
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