Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/clk/nxp/clk-lpc18xx-ccu.c b/drivers/clk/nxp/clk-lpc18xx-ccu.c
index 27781b4..f2e171a 100644
--- a/drivers/clk/nxp/clk-lpc18xx-ccu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-ccu.c
@@ -10,6 +10,7 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
@@ -142,7 +143,7 @@
 	 * Divider field is write only, so divider stat field must
 	 * be read so divider field can be set accordingly.
 	 */
-	val = clk_readl(gate->reg);
+	val = readl(gate->reg);
 	if (val & LPC18XX_CCU_DIVSTAT)
 		val |= LPC18XX_CCU_DIV;
 
@@ -155,12 +156,12 @@
 		 * and the next write should clear the RUN bit.
 		 */
 		val |= LPC18XX_CCU_AUTO;
-		clk_writel(val, gate->reg);
+		writel(val, gate->reg);
 
 		val &= ~LPC18XX_CCU_RUN;
 	}
 
-	clk_writel(val, gate->reg);
+	writel(val, gate->reg);
 
 	return 0;
 }