MAINTAINERS: Update hwspinlock paths

Include all files in drivers/hwspinlock and hwlock related dt bindings
in the hw spinlock section of MAINTAINERS.

Cc: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

MAINTAINERS

@@ -5268,8 +5268,9 @@ M:	Bjorn Andersson <bjorn.andersson@linaro.org>
 L:	linux-remoteproc@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock.git
+F:	Documentation/devicetree/bindings/hwlock/
 F:	Documentation/hwspinlock.txt
-F:	drivers/hwspinlock/hwspinlock_*
+F:	drivers/hwspinlock/
 F:	include/linux/hwspinlock.h
 
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