[arch-general] Virtualbox Models for 5.2.34 (supported) Fail to Build against Linux 5.4

All, Heads up to anyone still running Virtualbox 5.2.34 due to issues with headless clients in Virtualbox 6.x, the kernel modules for 5.2.34 will not build against Linux-5.4. Build failure details at: https://sourceforge.net/p/vbox-users/mailman/vbox-users-community/?viewmonth... -- David C. Rankin, J.D.,P.E.