Sync changelog

Author: vandroiy2013

Changelog.md

@@ -4,6 +4,7 @@ AppleALC Changelog
 - Added ALC255 layout-id 69 for Acer Aspire 3 A315-56-327T by juniorcaesar
 - Added ALC1220 layout-id 20 for Gigabyte B550 Vision D by CaseySJ
 - Added ALCS1220A layout-id 15 for Asus ROG Strix X570-F Gaming by CaseySJ
+- Added 700 series PCH HD Audio by dreamwhite
 
 #### v1.7.7
 - Added ALC256 layout-id 68 for nuc9 by littlesum