ACPI: PCI: Drop ACPI_PCI_COMPONENT that is not used any more

After dropping all of the code using ACPI_PCI_COMPONENT drop the
definition of it too and update the documentation to remove all
ACPI_PCI_COMPONENT references from it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>

Documentation/admin-guide/kernel-parameters.txt

@@ -50,7 +50,7 @@
 			CONFIG_ACPI_DEBUG must be enabled to produce any ACPI
 			debug output.  Bits in debug_layer correspond to a
 			_COMPONENT in an ACPI source file, e.g.,
-			    #define _COMPONENT ACPI_PCI_COMPONENT
+			    #define _COMPONENT ACPI_EVENTS
 			Bits in debug_level correspond to a level in
 			ACPI_DEBUG_PRINT statements, e.g.,
 			    ACPI_DEBUG_PRINT((ACPI_DB_INFO, ...
@@ -60,8 +60,6 @@
 
 			Enable processor driver info messages:
 			    acpi.debug_layer=0x20000000
-			Enable PCI/PCI interrupt routing info messages:
-			    acpi.debug_layer=0x400000
 			Enable AML "Debug" output, i.e., stores to the Debug
 			object while interpreting AML:
 			    acpi.debug_layer=0xffffffff acpi.debug_level=0x2

Documentation/firmware-guide/acpi/debug.rst

@@ -54,7 +54,6 @@ shows the supported mask values, currently these::
     ACPI_TOOLS                      0x00002000
     ACPI_SBS_COMPONENT              0x00100000
     ACPI_FAN_COMPONENT              0x00200000
-    ACPI_PCI_COMPONENT              0x00400000
     ACPI_CONTAINER_COMPONENT        0x01000000
     ACPI_SYSTEM_COMPONENT           0x02000000
     ACPI_MEMORY_DEVICE_COMPONENT    0x08000000
@@ -127,10 +126,6 @@ AML) during boot::
 
     acpi.debug_layer=0xffffffff acpi.debug_level=0x2
 
-Enable PCI and PCI interrupt routing debug messages::
-
-    acpi.debug_layer=0x400000 acpi.debug_level=0x4
-
 Enable all ACPI hardware-related messages::
 
     acpi.debug_layer=0x2 acpi.debug_level=0xffffffff

drivers/acpi/sysfs.c

@@ -54,7 +54,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
 
 	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),

include/acpi/acpi_drivers.h

@@ -17,7 +17,6 @@
  */
 #define ACPI_SBS_COMPONENT		0x00100000
 #define ACPI_FAN_COMPONENT		0x00200000
-#define ACPI_PCI_COMPONENT		0x00400000
 #define ACPI_CONTAINER_COMPONENT	0x01000000
 #define ACPI_SYSTEM_COMPONENT		0x02000000
 #define ACPI_MEMORY_DEVICE_COMPONENT	0x08000000