[PATCH 3/5] ARM: smp_scu: Add the enable standby operation

Quoting the ARM datasheet: "When set, SCU CLK is turned off when all processors are in WFI mode, there is no pending request on the ACP, if implemented, and there is no remaining activity in the SCU. When SCU CLK is off, ARREADYS, AWREADYS and WREADYS on the ACP are forced LOW. The clock is

[PATCH 3/5] ARM: smp_scu: Add the enable standby operation

Quoting the ARM datasheet: When set, SCU CLK is turned off when all processors are in WFI mode, there is no pending request on the ACP, if implemented, and there is no remaining activity in the SCU. When SCU CLK is off, ARREADYS, AWREADYS and WREADYS on the ACP are forced LOW. The clock is turned