clk: rockchip: Implement rockchip_clk_register_armclk_multi_pll()

clk: rockchip: Implement rockchip_clk_register_armclk_multi_pll()

The current path will have an independent PLL(LPLL\BPLL)
exclusively for the CPU to use.
As follows:

            |-\
    --lpll--|  \
            |mux|--[gate]--[div]--clk_core--
    --gpll--|  /
            |-/

The new chip does not have a dedicated PLL for the cpu;
it is distributed nearby from the common PLL.
If there are special frequency requirements that require the
use of pvtpll, explanations will be submitted later.

The clock path of new soc CPU simplified as follows:

    --gpll--|--\
            |   \
            |    \
            |     \
   --v0pll--| mux |--[gate]--[div]--clk_core--
            |     /
            |    /
   --v1pll--|   /
            |--/

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Link: https://patch.msgid.link/20251111025738.869847-2-zhangqing@rock-chips.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>