MAINTAINERS: clarify maintenance of ARM Dove drivers

Commit 44e259ac90 ("ARM: dove: create a proper PMU driver for power
domains, PMU IRQs and resets") introduced new drivers for the ARM Dove SOC,
but did not add those drivers to the existing entry ARM/Marvell
Dove/MV78xx0/Orion SOC support in MAINTAINERS. Hence, these drivers were
considered to be part of "THE REST".

Clarify now that these drivers are maintained by the ARM/Marvell
Dove/MV78xx0/Orion SOC support maintainers.

This was identified with a small script that finds all files only belonging
to "THE REST" according to the current MAINTAINERS file, and I acted upon
its output.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

MAINTAINERS

@@ -1995,6 +1995,7 @@ F:	arch/arm/mach-dove/
 F:	arch/arm/mach-mv78xx0/
 F:	arch/arm/mach-orion5x/
 F:	arch/arm/plat-orion/
+F:	drivers/soc/dove/
 
 ARM/Marvell Kirkwood and Armada 370, 375, 38x, 39x, XP, 3700, 7K/8K, CN9130 SOC support
 M:	Jason Cooper <jason@lakedaemon.net>