ACPICA: Add infrastructure for External() opcode.

ACPICA commit d115fe2ffdab449d6107d58580c5afd0a81d65fe

This change adds the basic low-level infrastructure for the External
AML opcode. The interpreter will simply ignore this op, as the op
is intended for use by the disassembler only.

Note that External() opcode is useful for disassembler, interpreter
can simply ignore it and still return exceptions for unknown control
methods so the kernel part only includes the grammar definition of
External() opcode in order to ignore it but doesn't interpret it.

Link: https://github.com/acpica/acpica/commit/d115fe2f
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index a5f17de..fd85ad0 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -111,6 +111,7 @@
 #define ARGP_DWORD_OP                   ARGP_LIST1 (ARGP_DWORDDATA)
 #define ARGP_ELSE_OP                    ARGP_LIST2 (ARGP_PKGLENGTH,  ARGP_TERMLIST)
 #define ARGP_EVENT_OP                   ARGP_LIST1 (ARGP_NAME)
+#define ARGP_EXTERNAL_OP                ARGP_LIST3 (ARGP_NAMESTRING, ARGP_BYTEDATA,      ARGP_BYTEDATA)
 #define ARGP_FATAL_OP                   ARGP_LIST3 (ARGP_BYTEDATA,   ARGP_DWORDDATA,     ARGP_TERMARG)
 #define ARGP_FIELD_OP                   ARGP_LIST4 (ARGP_PKGLENGTH,  ARGP_NAMESTRING,    ARGP_BYTEDATA,  ARGP_FIELDLIST)
 #define ARGP_FIND_SET_LEFT_BIT_OP       ARGP_LIST2 (ARGP_TERMARG,    ARGP_TARGET)
@@ -243,6 +244,7 @@
 #define ARGI_DWORD_OP                   ARGI_INVALID_OPCODE
 #define ARGI_ELSE_OP                    ARGI_INVALID_OPCODE
 #define ARGI_EVENT_OP                   ARGI_INVALID_OPCODE
+#define ARGI_EXTERNAL_OP                ARGI_LIST3 (ARGI_STRING,     ARGI_INTEGER,       ARGI_INTEGER)
 #define ARGI_FATAL_OP                   ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_INTEGER)
 #define ARGI_FIELD_OP                   ARGI_INVALID_OPCODE
 #define ARGI_FIND_SET_LEFT_BIT_OP       ARGI_LIST2 (ARGI_INTEGER,    ARGI_TARGETREF)