MAINTAINERS: add entries for i2c/ppc4xx

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

MAINTAINERS

@@ -976,7 +976,9 @@ M: Alexander Graf <agraf@suse.de>
 L: qemu-ppc@nongnu.org
 S: Odd Fixes
 F: hw/ppc/ppc4*.c
+F: hw/i2c/ppc4xx_i2c.c
 F: include/hw/ppc/ppc4xx.h
+F: include/hw/i2c/ppc4xx_i2c.h
 
 ppce500
 M: Alexander Graf <agraf@suse.de>