lenovo/x230/dsdt.asl: Change space to tab.

Change-Id: I9e6d39a5a08fe9fd27daeca0e8393ff019b722d4
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4779
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
diff --git a/src/mainboard/lenovo/x230/dsdt.asl b/src/mainboard/lenovo/x230/dsdt.asl
index 0477226..db2a793 100644
--- a/src/mainboard/lenovo/x230/dsdt.asl
+++ b/src/mainboard/lenovo/x230/dsdt.asl
@@ -29,7 +29,7 @@
 	"DSDT",
 	0x02,		// DSDT revision: ACPI v2.0
 	"COREv4",	// OEM id
-	"COREBOOT",     // OEM table id
+	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
 )
 {