iopoll: Extend read_poll_timeout macro to support variable parameters

This macro currently supports only one parameter. Based on Linux iopoll,
let's extend read_poll_timeout common API to allow multiple variable
parameters.

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index f3f9d83..1fdc841 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -202,8 +202,8 @@
 	/* REN Enable on STRB Line for HS400 */
 	writel(RK_CLRSETBITS(0, 1 << 9), &phy->emmcphy_con[2]);
 
-	read_poll_timeout(readl, &phy->emmcphy_status, dllrdy,
-			  PHYCTRL_DLL_LOCK_WO_TMOUT(dllrdy), 1, 5000);
+	read_poll_timeout(readl, dllrdy, PHYCTRL_DLL_LOCK_WO_TMOUT(dllrdy), 1,
+			  5000, &phy->emmcphy_status);
 }
 
 static void rk3399_emmc_phy_power_off(struct rockchip_emmc_phy *phy)
@@ -328,8 +328,9 @@
 			DWCMSHC_EMMC_DLL_START;
 		sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_CTRL);
 
-		ret = read_poll_timeout(readl, host->ioaddr + DWCMSHC_EMMC_DLL_STATUS0,
-					val, DLL_LOCK_WO_TMOUT(val), 1, 500);
+		ret = read_poll_timeout(readl, val, DLL_LOCK_WO_TMOUT(val), 1,
+					500,
+					host->ioaddr + DWCMSHC_EMMC_DLL_STATUS0);
 		if (ret)
 			return ret;