MAINTAINERS: repair reference in HYCON HY46XX TOUCHSCREEN SUPPORT

Commit aa2f62cf ("Input: add driver for the Hycon HY46XX touchpanel
series") adds the file ./drivers/input/touchscreen/hycon-hy46xx.c, but the
file entry in MAINTAINERS refers to ./drivers/input/touchscreen/hy46xx.c.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches    F:    drivers/input/touchscreen/hy46xx.c

Repair the file entry by referring to the right location.
Signed-off-by: NLukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: NGiulio Benetti <giulio.benetti@benettiengineering.com>
Link: https://lore.kernel.org/r/20210419060023.3460-1-lukas.bulwahn@gmail.comSigned-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

MAINTAINERS

@@ -8249,7 +8249,7 @@ M:	Giulio Benetti <giulio.benetti@benettiengineering.com>
 L:	linux-input@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
-F:	drivers/input/touchscreen/hy46xx.c
+F:	drivers/input/touchscreen/hycon-hy46xx.c
 
 HYGON PROCESSOR SUPPORT
 M:	Pu Wen <puwen@hygon.cn>