clk: starfive: Add StarFive JH7110 Video-Output clock driver

Add driver for the StarFive JH7110 Video-Output clock controller.
And these clock controllers should power on and enable the clocks from
SYSCRG first before registering.

Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>