clk: renesas: r7s9210: Always use readl()

On arm32, there is no reason to use the (soon deprecated) clk_readl().
Hence use the generic readl() instead.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

drivers/clk/renesas/r7s9210-cpg-mssr.c

@@ -11,6 +11,7 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
+#include <linux/io.h>
 #include <dt-bindings/clock/r7s9210-cpg-mssr.h>
 #include "renesas-cpg-mssr.h"
 
@@ -119,7 +120,7 @@ static void __init r7s9210_update_clk_table(struct clk *extal_clk,
 	if (clk_get_rate(extal_clk) > 12000000)
 		cpg_mode = 1;
 
-	frqcr = clk_readl(base + CPG_FRQCR) & 0xFFF;
+	frqcr = readl(base + CPG_FRQCR) & 0xFFF;
 	if (frqcr == 0x012)
 		index = 0;
 	else if (frqcr == 0x112)