[PATCH] add note about "Copyright" to SubmittingDrivers

From: Grant Grundler <grundler@parisc-linux.org>

This patch adds a comment to "Documentation/SubmittingDrivers" about the
importance of adding a Copyright notice in submitted code.

The parisc-linux port has neglected this in the past and I've been slowly
trying to correct that (along with proper GPL header).

While I make it sound like GPL is the "only" acceptable license, I'll leave
it up to lawyers to determine what other appropriate license could be used
for a new driver.

Documentation/SubmittingDrivers

@@ -51,6 +51,13 @@ Licensing:	The code must be released to us under the
 		to be useful to other communities such as BSD you may well
 		wish to release under multiple licenses.
 
+Copyright:	The copyright owner must agree to use of GPL.
+		It's best if the submitter and copyright owner
+		are the same person/entity. If not, the name of
+		the person/entity authorizing use of GPL should be
+		listed in case it's necessary to verify the will of
+		the copright owner.
+
 Interfaces:	If your driver uses existing interfaces and behaves like
 		other drivers in the same class it will be much more likely
 		to be accepted than if it invents gratuitous new ones.