log ec data with DEBUG_SPEW

Change-Id: I26424e80c776bfc134528f42e87fde42d6a13108
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/28
Tested-by: build bot (Jenkins)
diff --git a/src/ec/acpi/ec.c b/src/ec/acpi/ec.c
index 2680aa3..ad297fb 100644
--- a/src/ec/acpi/ec.c
+++ b/src/ec/acpi/ec.c
@@ -96,7 +96,7 @@
 	}
 
 	data = inb(ec_data_reg);
-	printk(BIOS_DEBUG, "recv_ec_data: 0x%02x\n", data);
+	printk(BIOS_SPEW, "recv_ec_data: 0x%02x\n", data);
 
 	return data;
 }