ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up

This fixes a potential kernel panic on memcpy when FORTIFY_SOURCE
is enabled. Because memory is iomem use appropriate function for
accessing it.
Signed-off-by: NIvan T. Ivanov <iivanov@suse.de>
Link: https://lore.kernel.org/r/20211116084616.24811-1-iivanov@suse.deSigned-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/mach-rockchip/platsmp.c

@@ -189,7 +189,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
 	rockchip_boot_fn = __pa_symbol(secondary_startup);
 
 	/* copy the trampoline to sram, that runs during startup of the core */
-	memcpy(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
+	memcpy_toio(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
 	flush_cache_all();
 	outer_clean_range(0, trampoline_sz);