ACPICA: Make acpi_protocol_lengths static

ACPICA commit 0ebacf12b8ca66ce6d3fce4d349b3f2448da18cb

A linux-based static analyzer (sparse) caught this as a warning.
Making this variable static will result in better optimizations and
ensure that this variable does not get used outside of this file.

Signed-off-by: Yue Haibing <[email protected]>
[ek: commit message]

Link: acpica/acpica@0ebacf12
Signed-off-by: Erik Kaneda <[email protected]>
Signed-off-by: Yue Haibing <[email protected]>
Signed-off-by: Bob Moore <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: Yue Haibing

drivers/acpi/acpica/exfield.c

@@ -22,7 +22,7 @@ ACPI_MODULE_NAME("exfield")
  */
 #define ACPI_INVALID_PROTOCOL_ID        0x80
 #define ACPI_MAX_PROTOCOL_ID            0x0F
-const u8 acpi_protocol_lengths[] = {
+static const u8 acpi_protocol_lengths[] = {
 	ACPI_INVALID_PROTOCOL_ID,	/* 0 - reserved */
 	ACPI_INVALID_PROTOCOL_ID,	/* 1 - reserved */
 	0x00,			/* 2 - ATTRIB_QUICK */