spi: rpc-if: Add resume support for RZ/G3E

On RZ/G3E using PSCI, s2ram powers down the SoC. After resume,
reinitialize the hardware for SPI operations.

Signed-off-by: Biju Das <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: bijudas

drivers/spi/spi-rpc-if.c

@@ -207,6 +207,8 @@ static int rpcif_spi_resume(struct device *dev)
 {
 	struct spi_controller *ctlr = dev_get_drvdata(dev);
 
+	rpcif_hw_init(dev, false);
+
 	return spi_controller_resume(ctlr);
 }