v4plus: Increaset memory for 4k OUT2 display

configs/os/boot-config/v4plus-hdmi-rpi4.txt

@@ -3,7 +3,7 @@
 initramfs initramfs-linux.img followkernel
 
 hdmi_force_hotplug=1
-gpu_mem=128
+gpu_mem=192
 enable_uart=1
 dtoverlay=disable-bt
 

configs/os/cmdline/v4plus-hdmi-rpi4.sed

@@ -1 +1 @@
-s/rootwait/rootwait cma=128M/g
+s/rootwait/rootwait cma=192M/g

kvmd.install

@@ -112,6 +112,13 @@ EOF
 		cp /usr/share/kvmd/configs.default/janus/janus.plugin.ustreamer.jcfg /etc/kvmd/janus || true
 	fi
 
+	if [[ "$(vercmp "$2" 4.59)" -lt 0 ]]; then
+		if grep -q "^dtoverlay=vc4-kms-v3d" /boot/config.txt; then
+			sed -e "s/cma=128M/cma=192M/g" /boot/cmdline.txt || true
+			sed -e "s/^gpu_mem=128/gpu_mem=192/g" /boot/config.txt || true
+		fi
+	fi
+
 	# Some update deletes /etc/motd, WTF
 	# shellcheck disable=SC2015,SC2166
 	[ ! -f /etc/motd -a -f /etc/motd.pacsave ] && mv /etc/motd.pacsave /etc/motd || true