MAINTAINERS: Change Maintainer for some at91 drivers

I hand over the maintenance of these drivers to my colleagues. Claudiu,
Codrin and Tudor already have experience with these controllers and
sub-systems.

Signed-off-by: Nicolas Ferre <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

MAINTAINERS

···
 F:	include/dt-bindings/iio/adc/at91-sama5d2_adc.h
 
 MICROCHIP SAMA5D2-COMPATIBLE SHUTDOWN CONTROLLER
-M:	Nicolas Ferre <[e-mail]>
+M:	Claudiu Beznea <[e-mail]>
 S:	Supported
 F:	drivers/power/reset/at91-sama5d2_shdwc.c
 
 MICROCHIP SPI DRIVER
-M:	Nicolas Ferre <[e-mail]>
+M:	Tudor Ambarus <[e-mail]>
 S:	Supported
 F:	drivers/spi/spi-atmel.*
 
 MICROCHIP SSC DRIVER
-M:	Nicolas Ferre <[e-mail]>
+M:	Codrin Ciubotariu <[e-mail]>
 L:	[e-mail] (moderated for non-subscribers)
 S:	Supported
 F:	drivers/misc/atmel-ssc.c