MAINTAINERS: Rectify entry for OPENCORES I2C BUS DRIVER

Commit 8ad69f49 ("dt-bindings: i2c: convert ocores binding to yaml")
converts i2c-ocores.txt to opencores,i2c-ocores.yaml, but then adjust its
reference in MAINTAINERS to a slightly wrong new filename.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.

Repair this file reference in OPENCORES I2C BUS DRIVER.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

MAINTAINERS

@@ -14869,7 +14869,7 @@ M:	Peter Korsgaard <peter@korsgaard.com>
 M:	Andrew Lunn <andrew@lunn.ch>
 L:	linux-i2c@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/i2c/i2c-ocores.yaml
+F:	Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
 F:	Documentation/i2c/busses/i2c-ocores.rst
 F:	drivers/i2c/busses/i2c-ocores.c
 F:	include/linux/platform_data/i2c-ocores.h