Merge changes from topic "a3700-comphy-fixes-1" into integration

Merge changes from topic "a3700-comphy-fixes-1" into integration

* changes:
  refactor(drivers/marvell/comphy-3700): rename Clock Source Low value constants
  refactor(drivers/marvell/comphy-3700): rename Clock Source Low register constants
  refactor(drivers/marvell/comphy-3700): rename Reset and Clock Control register constants
  refactor(drivers/marvell/comphy-3700): rename Lane Status 1 register constants
  refactor(drivers/marvell/comphy-3700): rename Miscellaneous Control register constants
  refactor(drivers/marvell/comphy-3700): rename Idle Sync Enable register constants
  refactor(drivers/marvell/comphy-3700): unify Generation Settings register values
  refactor(drivers/marvell/comphy-3700): unify Generation Settings register names
  refactor(drivers/marvell/comphy-3700): drop _ADDR suffixes
  refactor(drivers/marvell/comphy-3700): drop _REG prefixes and suffixes
  refactor(drivers/marvell/comphy-3700): move and add comment for COMPHY_RESERVED_REG
  refactor(drivers/marvell/comphy-3700): move Miscellaneous Control 0 register definition
  refactor(drivers/marvell/comphy-3700): rename PHY_GEN_USB3_5G to PHY_GEN_MAX_USB3_5G
  refactor(drivers/marvell/comphy-3700): rename Digital Loopback Enable register constant
  fix(drivers/marvell/comphy): change reg_set() / reg_set16() to update semantics
  fix(drivers/marvell/comphy-3700): use reg_set() according to update semantics
  fix(drivers/marvell/comphy-3700): fix comments about selector register values
  fix(drivers/marvell/comphy-3700): fix comment about COMPHY status register
  fix(drivers/marvell/comphy-3700): fix reference clock selection value names
  fix(drivers/marvell/comphy-3700): drop MODE_REFDIV constant
  fix(drivers/marvell/comphy-3700): fix SerDes frequency register value name
  fix(drivers/marvell/comphy-3700): fix Generation Setting registers names
  fix(drivers/marvell/comphy-3700): fix PIN_PU_IVREF register name