mmc: sdhci-pltfm: Support optional pm properties

Add support for optional pm capabilities such as MMC_PM_KEEP_POWER
and MMC_PM_WAKE_SDIO_IRQ.
Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-pltfm.c

@@ -89,6 +89,12 @@ void sdhci_get_of_property(struct platform_device *pdev)
 		clk = of_get_property(np, "clock-frequency", &size);
 		if (clk && size == sizeof(*clk) && *clk)
 			pltfm_host->clock = be32_to_cpup(clk);
+
+		if (of_find_property(np, "keep-power-in-suspend", NULL))
+			host->mmc->pm_caps |= MMC_PM_KEEP_POWER;
+
+		if (of_find_property(np, "enable-sdio-wakeup", NULL))
+			host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
 	}
 }
 #else