ACPI: Move definition of PREFIX from acpi_bus.h to internal..h

Linux/ACPI core files using internal.h all PREFIX "ACPI: ",
however, not all ACPI drivers use/want it -- and they
should not have to #undef PREFIX to define their own.

Add GPL commment to internal.h while we are there.

This does not change any actual console output,
asside from a whitespace fix.

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index f844941..811fec1 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -30,6 +30,8 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
+#include "internal.h"
+
 #define _COMPONENT		ACPI_BUS_COMPONENT
 ACPI_MODULE_NAME("utils");