Public bug reported:

[Impact]
On HP Elitebook 6 G1a laptops, the Mute and MIC-Mute functions are working but 
the LED states are not toggled accordingly.

[Fix]
The HP laptops with ALC236 codec need the quirk 
ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF for both Mute and Mic-Mute LEDs.

[Test Case]
1. Get HP EliteBook 6 G1a machines and boot up.
2. press mute hot-key and check if mute function is working correctly or not.
3. The mute led should be ON when mute enabled, OFF when disabled.
4. press mic-mute hot-key and check if mic-mute is enabled or not by the OSD 
icon.
5. The mic-mute led should be ON when mic-mute enabled, OFF when disabled.

[Where problems could occur]
They are quirked by particular codec on specified SSIDs. Should have no impact 
for other platforms. The risk should be low.

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.14 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu Noble)
     Importance: Undecided
         Status: In Progress

** Affects: linux-oem-6.14 (Ubuntu Noble)
     Importance: Undecided
         Status: In Progress

** Affects: linux (Ubuntu Plucky)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu Plucky)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.14 (Ubuntu Plucky)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Questing)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu Questing)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.14 (Ubuntu Questing)
     Importance: Undecided
         Status: New


** Tags: jira-stella-1899 oem-priority

** Also affects: linux (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Plucky)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Questing)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-6.11 (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-6.14 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: linux-oem-6.11 (Ubuntu Noble)
       Status: New => In Progress

** Changed in: linux-oem-6.14 (Ubuntu Noble)
       Status: New => In Progress

** Tags added: jira-stella-1899 oem-priority

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https://bugs.launchpad.net/bugs/2115198

Title:
  Enable the mute and mic-mute LEDs on HP Elitebook 6 laptops

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