arm: octeontx: Select CLK

Clock support is needed for all Octeon TX/TX2 boards. This patch selects
CONFIG_CLK so that it is available.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Suneel Garapati <sgarapati@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>

arch/arm/Kconfig

@@ -1744,6 +1744,7 @@ config ARCH_ROCKCHIP
 
 config ARCH_OCTEONTX
 	bool "Support OcteonTX SoCs"
+	select CLK
 	select DM
 	select ARM64
 	select OF_CONTROL
@@ -1753,6 +1754,7 @@ config ARCH_OCTEONTX
 
 config ARCH_OCTEONTX2
 	bool "Support OcteonTX2 SoCs"
+	select CLK
 	select DM
 	select ARM64
 	select OF_CONTROL