ARM: exynos: clear prefetch bits in default l2c_aux_val

Clear the L310_AUX_CTRL_DATA_PREFETCH and L310_AUX_CTRL_INSTR_PREFETCH
bits in the l2c_aux_val defaults for Exynos since they can now be set
using the standard l2c2x0 devicetree bindings.
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Link: https://lore.kernel.org/r/e44b5226f3ad1551459830c678ed183762d8e458.1597061474.git.guillaume.tucker@collabora.comSigned-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/mach-exynos/exynos.c

@@ -206,8 +206,8 @@ static void __init exynos_dt_fixup(void)
 }
 
 DT_MACHINE_START(EXYNOS_DT, "Samsung Exynos (Flattened Device Tree)")
-	.l2c_aux_val	= 0x38400000,
-	.l2c_aux_mask	= 0xc60fffff,
+	.l2c_aux_val	= 0x08400000,
+	.l2c_aux_mask	= 0xf60fffff,
 	.smp		= smp_ops(exynos_smp_ops),
 	.map_io		= exynos_init_io,
 	.init_early	= exynos_firmware_init,