dt-bindings: Renamed hte directory to timestamp

Renamed hte dt binding directory to timestamp according review comment.
Addressed minor comment about having HTE acronym first in the common dt
binding document.

The change reflects above renaming in MAINTAINERS files too.

Signed-off-by: Dipen Patel <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

Documentation/devicetree/bindings/hte/hardware-timestamps-common.yaml Documentation/devicetree/bindings/timestamp/hardware-timestamps-common.yaml

···
   - Dipen Patel <[e-mail]>
 
 description:
-  Some devices/SoCs have hardware time stamping engines which can use hardware
-  means to timestamp entity in realtime. The entity could be anything from
-  GPIOs, IRQs, Bus and so on. The hardware timestamp engine (HTE) present
+  Some devices/SoCs have hardware timestamp engines (HTE) which can use
+  hardware means to timestamp entity in realtime. The entity could be anything
+  from GPIOs, IRQs, Bus and so on. The hardware timestamp engine present
   itself as a provider with the bindings described in this document.
 
 properties:

MAINTAINERS

···
 HTE SUBSYSTEM
 M:	Dipen Patel <[e-mail]>
 S:	Maintained
-F:	Documentation/devicetree/bindings/hte/
+F:	Documentation/devicetree/bindings/timestamp/
 F:	Documentation/hte/
 F:	drivers/hte/
 F:	include/linux/hte.h