ARM: shmobile: sh73a0: Use ioremap() to map L2C registers

Replace using the legacy IOMEM() macro to map the L2C registers by
ioremap().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201117103022.2136527-6-geert+renesas@glider.be

arch/arm/mach-shmobile/setup-sh73a0.c

@@ -44,7 +44,7 @@ static void __init sh73a0_generic_init(void)
 {
 #ifdef CONFIG_CACHE_L2X0
 	/* Shared attribute override enable, 64K*8way */
-	l2x0_init(IOMEM(0xf0100000), 0x00400000, 0xc20f0fff);
+	l2x0_init(ioremap(0xf0100000, PAGE_SIZE), 0x00400000, 0xc20f0fff);
 #endif
 }