iwlwifi: add shared clock PHY config flag for some devices

Some devices use a shared clock which is very sensitive to variations
and cause trouble in some situations.  We need to set a bit in the phy
configuration to indicate that to the FW.  To make this generic, add a
extra_phy_config_flags element to the device configuration and OR it
into the phy_cfg before sending it to the firmware.  And also create a
set of configurations for devices that use shared clocks and need this
extra bit to be set.

Fixes: c62446d2b028 ("iwlwifi: add new 9460 series PCI IDs")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 0920be6..3c59109 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -433,6 +433,10 @@ static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
 
 	/* Set parameters */
 	phy_cfg_cmd.phy_cfg = cpu_to_le32(iwl_mvm_get_phy_config(mvm));
+
+	/* set flags extra PHY configuration flags from the device's cfg */
+	phy_cfg_cmd.phy_cfg |= cpu_to_le32(mvm->cfg->extra_phy_cfg_flags);
+
 	phy_cfg_cmd.calib_control.event_trigger =
 		mvm->fw->default_calib[ucode_type].event_trigger;
 	phy_cfg_cmd.calib_control.flow_trigger =