doc: driver-model: improve wording "is provide the"

Improve the wording by changing it from "is provide the" to
"is to give the".

Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/driver-model/bus.txt

@@ -45,7 +45,7 @@ them are inherently bus-specific. Drivers typically declare an array
 of device IDs of devices they support that reside in a bus-specific
 driver structure. 
 
-The purpose of the match callback is provide the bus an opportunity to
+The purpose of the match callback is to give the bus an opportunity to
 determine if a particular driver supports a particular device by
 comparing the device IDs the driver supports with the device ID of a
 particular device, without sacrificing bus-specific functionality or