Require either buffer or host_ptr to be non-NULL

Author: Henry Linjamäki

ext/cl_khr_tensor.asciidoc

@@ -272,12 +272,10 @@ cl_int clEnqueueTranslateToTensor(
 * _blocking_command_ indicate if the read and write operations are
   blocking or non-blocking (see below).
 
-* _buffer_ refers to a valid buffer object where data is to be
-  read into or to be written from when the value of _host_ptr_ is
-  NULL. If _host_ptr_ is non-NULL then value of _buffer_ is ignored.
-
-* _host_ptr_ is the pointer to buffer in host memory where data is to
-  be read into or to be written from when the value is non-NULL.
+* _buffer_ and _host_ptr_ refer to a valid buffer object / host
+  allocation where data is to be read into or to be written from.
+  Either the _buffer_ or _host_ptr_ can be non-NULL in which case the
+  non-NULL argument is used as the operand for the operation.
 
 * _event_wait_list_ and _num_events_in_wait_list_ specify events that
   need to complete before this particular command can be executed. If