[PATCH] docs: fix some broken references due to txt->rst renames

[Mauro Carvalho Chehab]

There are three left-overs from the recent file renames,
probably due to some other conflicting patch.

Fix them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung at kernel.org>
---

This patch is against today's next-20190617 branch. Not sure if it
will apply cleanly at -docs tree. If not,  Please let me know for me to
split.

 Documentation/devicetree/bindings/arm/idle-states.txt | 2 +-
 drivers/gpu/drm/i915/intel_runtime_pm.h               | 2 +-
 drivers/i2c/busses/i2c-nvidia-gpu.c                   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/idle-states.txt b/Documentation/devicetree/bindings/arm/idle-states.txt
index 3bdbe675b9e6..d8d9aa7167e8 100644
--- a/Documentation/devicetree/bindings/arm/idle-states.txt
+++ b/Documentation/devicetree/bindings/arm/idle-states.txt
@@ -703,4 +703,4 @@ cpus {
     https://www.devicetree.org/specifications/
 
 [6] ARM Linux Kernel documentation - Booting AArch64 Linux
-    Documentation/arm64/booting.txt
+    Documentation/arm64/booting.rst
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index f2d6299a8161..3cb391cd81c1 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -44,7 +44,7 @@ enum i915_drm_suspend_mode {
  * to be disabled. This shouldn't happen and we'll print some error messages in
  * case it happens.
  *
- * For more, read the Documentation/power/runtime_pm.txt.
+ * For more, read the Documentation/power/runtime_pm.rst.
  */
 struct intel_runtime_pm {
 	atomic_t wakeref_count;
diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-nvidia-gpu.c
index cfc76b5de726..5a1235fd86bb 100644
--- a/drivers/i2c/busses/i2c-nvidia-gpu.c
+++ b/drivers/i2c/busses/i2c-nvidia-gpu.c
@@ -364,7 +364,7 @@ static void gpu_i2c_remove(struct pci_dev *pdev)
 /*
  * We need gpu_i2c_suspend() even if it is stub, for runtime pm to work
  * correctly. Without it, lspci shows runtime pm status as "D0" for the card.
- * Documentation/power/pci.txt also insists for driver to provide this.
+ * Documentation/power/pci.rst also insists for driver to provide this.
  */
 static __maybe_unused int gpu_i2c_suspend(struct device *dev)
 {
-- 
2.21.0