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/conf/layer.conf b/meta-amd/meta-ethanolx/conf/layer.conf
index 0564fe4..37f32bc 100644
--- a/meta-amd/meta-ethanolx/conf/layer.conf
+++ b/meta-amd/meta-ethanolx/conf/layer.conf
@@ -9,4 +9,4 @@
 BBFILE_PATTERN_ethanolx-layer = "^${LAYERDIR}/"
 BBFILE_PRIORITY_ethanolx-layer = "6"
 
-LAYERSERIES_COMPAT_ethanolx-layer = "hardknott"
+LAYERSERIES_COMPAT_ethanolx-layer = "hardknott honister"
diff --git a/meta-amd/meta-ethanolx/conf/local.conf.sample b/meta-amd/meta-ethanolx/conf/local.conf.sample
index 34a13a5..27e36f8 100644
--- a/meta-amd/meta-ethanolx/conf/local.conf.sample
+++ b/meta-amd/meta-ethanolx/conf/local.conf.sample
@@ -115,7 +115,7 @@
 # Supported values are i686 and x86_64
 #SDKMACHINE ?= "i686"
 
-SANITY_TESTED_DISTROS_append ?= " RedHatEnterpriseWorkstation-6.*"
+SANITY_TESTED_DISTROS:append ?= " RedHatEnterpriseWorkstation-6.*"
 
 #
 # Extra image configuration defaults
@@ -226,12 +226,12 @@
 # By default qemu will build with a builtin VNC server where graphical output can be
 # seen. The two lines below enable the SDL backend too. This assumes there is a
 # libsdl library available on your build system.
-PACKAGECONFIG_append_pn-qemu-native = " sdl"
-PACKAGECONFIG_append_pn-nativesdk-qemu = " sdl"
+PACKAGECONFIG:append:pn-qemu-native = " sdl"
+PACKAGECONFIG:append:pn-nativesdk-qemu = " sdl"
 #ASSUME_PROVIDED += "libsdl-native"
 
 
 # CONF_VERSION is increased each time build/conf/ changes incompatibly and is used to
 # track the version of this file when it was generated. This can safely be ignored if
 # this doesn't mean anything to you.
-CONF_VERSION = "1"
+CONF_VERSION = "2"
diff --git a/meta-amd/meta-ethanolx/conf/machine/ethanolx.conf b/meta-amd/meta-ethanolx/conf/machine/ethanolx.conf
index 7fb6e7e..2ac82ca 100644
--- a/meta-amd/meta-ethanolx/conf/machine/ethanolx.conf
+++ b/meta-amd/meta-ethanolx/conf/machine/ethanolx.conf
@@ -2,7 +2,7 @@
 KMACHINE = "aspeed"
 KERNEL_DEVICETREE = "${KMACHINE}-bmc-amd-${MACHINE}.dtb"
 
-UBOOT_MACHINE_ethanolx = "ast_g5_phy_config"
+UBOOT_MACHINE:ethanolx = "ast_g5_phy_config"
 
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc