Merge branches 'clk-microchip', 'clk-lookup' and 'clk-st' into clk-next

Merge branches 'clk-microchip', 'clk-lookup' and 'clk-st' into clk-next

 - Speed up clk_core_lookup() by using a hashtable

* clk-microchip:
  ARM: at91: remove default values for PMC_PLL_ACR
  clk: at91: add ACR in all PLL settings
  clk: at91: sam9x7: Add peripheral clock id for pmecc
  clk: at91: clk-master: Add check for divide by 3
  clk: at91: clk-sam9x60-pll: force write to PLL_UPDT register
  ARM: at91: pm: save and restore ACR during PLL disable/enable

* clk-lookup:
  clk: Use hashtable for global clk lookups
  clk: Sort include statements

* clk-st:
  dt-bindings: stm32: cosmetic fixes for STM32MP25 clock and reset bindings
  clk: stm32: introduce clocks for STM32MP21 platform
  dt-bindings: stm32: add STM32MP21 clocks and reset bindings