mainboard/kontron/ktqm77: Use tabs for indents

Change-Id: I3040dc9a2534a77087805ee61c4f91d1bdb4d509
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/16822
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/mainboard/kontron/ktqm77/mainboard.c

@@ -148,7 +148,7 @@ static int int15_handler(void)
 		X86_EAX |= 0x015f;
 		res = 1;
 		break;
-        default:
+	default:
 		printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
 		       X86_EAX & 0xffff);
 		break;