resource/docs: Complete kernel-doc style function documentation

Add the missing kernel-doc style function parameters documentation.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akpm@linux-foundation.org
Cc: linux-tip-commits@vger.kernel.org
Cc: rdunlap@infradead.org
Fixes: b69c2e20 ("resource: Clean it up a bit")
Link: http://lkml.kernel.org/r/20181105093307.GA12445@zn.tnic


Signed-off-by: Ingo Molnar <mingo@kernel.org>