layer: convert to new override syntax 💥

OE/Yocto is migration towards new override syntax,
current master (upcomming honister release) will not
tolerate "_" as override operator.

New override syntax will be backported to
dunfell, gatesgarth, hardknott releases.

Signed-off-by: Bartłomiej Burdukiewicz <bartlomiej.burdukiewicz@gmail.com>

recipes-graphics/xorg-xserver/libdri2_git.bb

@@ -9,7 +9,7 @@ PE = "1"
 PV = "1.0.0+git${SRCPV}"
 SRC_URI = "git://github.com/robclark/libdri2.git;protocol=http;branch=master"
 
-SRCREV_pn-${PN} = "4f1eef3183df2b270c3d5cbef07343ee5127a6a4"
+SRCREV = "4f1eef3183df2b270c3d5cbef07343ee5127a6a4"
 
 S = "${WORKDIR}/git"
 

recipes-graphics/xorg-xserver/xf86-video-fbturbo_git.bb

@@ -9,7 +9,7 @@ DEPENDS += "sunxi-mali libump xorgproto"
 
 PE = "3"
 PV = "0.5.1+git${SRCPV}"
-SRCREV_pn-${PN} = "e094e3c8f9004ca3347694bd05b99d136e8621b9"
+SRCREV = "e094e3c8f9004ca3347694bd05b99d136e8621b9"
 
 SRC_URI = "git://github.com/ssvb/xf86-video-fbturbo.git;protocol=http;branch=master \
            file://20-fbturbo.conf"
@@ -18,9 +18,9 @@ S = "${WORKDIR}/git"
 
 CFLAGS += " -I${STAGING_INCDIR}/xorg "
 
-do_install_append() {
+do_install:append() {
     install -d ${D}${datadir}/X11/xorg.conf.d
     install -m 0644 ${WORKDIR}/20-fbturbo.conf ${D}${datadir}/X11/xorg.conf.d
 }
 
-FILES_${PN} += "${datadir}/X11/xorg.conf.d/20-fbturbo.conf"
+FILES:${PN} += "${datadir}/X11/xorg.conf.d/20-fbturbo.conf"

recipes-graphics/xorg-xserver/xserver-xf86-config_0.1.bbappend

@@ -1 +1 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"