MAINTAINERS: media: change Microchip ISI, ISC maintainers

For ISC, Songjun is not with Microchip anymore, his address shouldn't be
reachable.
For ISI, Eugen can handle the maintenance now.
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

MAINTAINERS

@@ -2494,7 +2494,7 @@ S:	Supported
 F:	drivers/i2c/busses/i2c-at91.c
 
 ATMEL ISI DRIVER
-M:	Ludovic Desroches <ludovic.desroches@microchip.com>
+M:	Eugen Hristev <eugen.hristev@microchip.com>
 L:	linux-media@vger.kernel.org
 S:	Supported
 F:	drivers/media/platform/atmel/atmel-isi.c
@@ -9520,7 +9520,7 @@ S:	Maintained
 F:	drivers/crypto/atmel-ecc.*
 
 MICROCHIP / ATMEL ISC DRIVER
-M:	Songjun Wu <songjun.wu@microchip.com>
+M:	Eugen Hristev <eugen.hristev@microchip.com>
 L:	linux-media@vger.kernel.org
 S:	Supported
 F:	drivers/media/platform/atmel/atmel-isc.c