When a acpi device is removed, we need to call this function to remove
the acpi device from acpi bus. So export this function.

CC: David Rientjes <rientjes@google.com>
CC: Jiang Liu <redacted>
CC: Len Brown <redacted>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <redacted>
CC: Christoph Lameter <redacted>
Cc: Minchan Kim <redacted>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: KOSAKI Motohiro <redacted>
CC: Yasuaki Ishimatsu <redacted>
Signed-off-by: Wen Congyang <redacted>
---
  drivers/acpi/scan.c     |    3 ++-
  include/acpi/acpi_bus.h |    1 +
  2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index d1ecca2..1cefc34 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c

@@ -1224,7 +1224,7 @@ static int acpi_device_set_context(struct acpi_device *device)
  	return -ENODEV;
  }
  
-static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
+int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
  {
  	if (!dev)
  		return -EINVAL;

@@ -1246,6 +1246,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
  
  	return 0;
  }
+EXPORT_SYMBOL(acpi_bus_remove);
  
  static int acpi_add_single_object(struct acpi_device **child,
  				  acpi_handle handle, int type,

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index bde976e..2ccf109 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h

@@ -360,6 +360,7 @@ bool acpi_bus_power_manageable(acpi_handle handle);
  bool acpi_bus_can_wakeup(acpi_handle handle);
  int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
  void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
+int acpi_bus_remove(struct acpi_device *dev, int rmdevice);
  #ifdef CONFIG_ACPI_PROC_EVENT
  int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
  int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);