media: MAINTAINERS: hantro: Fix typo in a filepath

Fix typo (s/platform//) in the directory path.

Cc: Ezequiel Garcia <ezequiel@collabora.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Fixes: a29add8c ("media: rockchip/vpu: rename from rockchip to hantro")
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

MAINTAINERS

@@ -13755,7 +13755,7 @@ HANTRO VPU CODEC DRIVER
 M:	Ezequiel Garcia <ezequiel@collabora.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
-F:	drivers/staging/media/platform/hantro/
+F:	drivers/staging/media/hantro/
 F:	Documentation/devicetree/bindings/media/rockchip-vpu.txt
 
 ROCKER DRIVER