arm64: update ARCH_MVEBU for Marvell Armada 7K/8K support

This commit updates the ARCH_MVEBU Kconfig option introduced for
Armada 3700 to also be used for the Armada 7K and 8K platforms, by:

 - Selecting the appropriate clock and irqchip drivers
 - Updating the help text to mention Armada 7K and 8K
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/Kconfig.platforms

@@ -50,9 +50,14 @@ config ARCH_MEDIATEK
 
 config ARCH_MVEBU
 	bool "Marvell EBU SoC Family"
-	help
-	  This enables support for Marvell EBU family such as the
-	  Armada 3700 SoC family.
+	select ARMADA_AP806_CORE_CLK
+	select ARMADA_AP806_RING_CLK
+	select MVEBU_ODMI
+	help
+	  This enables support for Marvell EBU familly, including:
+	   - Armada 3700 SoC Family
+	   - Armada 7K SoC Family
+	   - Armada 8K SoC Family
 
 config ARCH_QCOM
 	bool "Qualcomm Platforms"