mb/google/volteer: Use tabs for indents

Change-Id: I7304b06d7bf34fb7126acfdef811481dc5cba598
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/volteer/dsdt.asl

@@ -48,6 +48,6 @@ DefinitionBlock(
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
 	/* Camera */
-        #include <soc/intel/tigerlake/acpi/ipu.asl>
+	#include <soc/intel/tigerlake/acpi/ipu.asl>
 	#include "acpi/mipi_camera.asl"
 }