meta-amd: fix compilation errors with latest Yocto

Make the following changes to fix compilation errors:
- add honister to the LAYERSERIES_COMPAT variable,
- increase CONF_VERSION to 2,
- use new bitbake override syntax

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
Change-Id: I971f0f0f7110e0350994ced151ca429444885056
diff --git a/meta-amd/meta-ethanolx/recipes-x86/chassis/x86-power-control_%.bbappend b/meta-amd/meta-ethanolx/recipes-x86/chassis/x86-power-control_%.bbappend
index 1cf276d..662090e 100644
--- a/meta-amd/meta-ethanolx/recipes-x86/chassis/x86-power-control_%.bbappend
+++ b/meta-amd/meta-ethanolx/recipes-x86/chassis/x86-power-control_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
 SRC_URI += "file://0001-Amd-power-control-modifications-for-EthanolX.patch"
 SRCREV = "01a77864f49088bac80474587a123d1f152f2b26"