v7.8 stable AGNi for MIATOLL excalibur/curtana/joyeuse/gram

Merge kernel 4.14.216
AGNi MIATOLL Wired Audio Clarity module v2
AGNi Support module v2 - disable LMKD (AOSP)
BACKPORTED: mm: convert totalram_pages and totalhigh_pages variables to atomic
fs/exfat: enable discard by default
qcacld-3.0: modify wifi configuration v2