MAINTAINERS: add maintainers for Synopsis Designware I2C drivers

Those guys already have been helpful in the past and are actively
working on this driver, unlike me.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

MAINTAINERS

@@ -9101,6 +9101,15 @@ S: Supported
 F: Documentation/devicetree/bindings/net/snps,dwc-qos-ethernet.txt
 F: drivers/net/ethernet/synopsys/dwc_eth_qos.c
 
+SYNOPSYS DESIGNWARE I2C DRIVER
+M:	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+M:	Jarkko Nikula <jarkko.nikula@linux.intel.com>
+M:	Mika Westerberg <mika.westerberg@linux.intel.com>
+L:	linux-i2c@vger.kernel.org
+S:	Maintained
+F:	drivers/i2c/busses/i2c-designware-*
+F:	include/linux/platform_data/i2c-designware.h
+
 SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER
 M:	Seungwon Jeon <tgih.jun@samsung.com>
 M:	Jaehoon Chung <jh80.chung@samsung.com>