clk: samsung: exynos850: Implement CMU_MFCMSCL domain

CMU_MFCMSCL clock domain provides clocks for MFC (Multi-Format Codec),
JPEG Codec and Scaler IP-cores. According to Exynos850 TRM, CMU_MFCMSCL
generates MFC, M2M, MCSC and JPEG clocks for BLK_MFCMSCL.

This patch adds next clocks:
  - bus clocks in CMU_TOP for CMU_MFCMSCL
  - all internal CMU_MFCMSCL clocks
  - leaf clocks for MFCMSCL, TZPC (TrustZone Protection Controller),
    JPEG codec, M2M (Memory-to-Memory), MCSC (Multi-Channel Scaler),
    MFC (Multi-Format Codec), PPMU (Platform Performance Monitoring
    Unit), SysMMU and SysReg

MFCMSCL related gate clocks in CMU_TOP were marked as CLK_IS_CRITICAL,
because:
  1. All of those have to be enabled in order to read
     /sys/kernel/debug/clk/clk_summary file
  2. When some user driver (e.g. exynos-sysmmu) disables some derived
     leaf clock, it can lead to CMU_TOP clocks disable, which then makes
     the system hang. To prevent that, the CLK_IS_CRITICAL flag is used,
     as CLK_IGNORE_UNUSED is not enough.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220809113323.29965-8-semen.protsenko@linaro.org

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