layer.conf: update LAYERSERIES_COMPAT for nanbield (#752)

* oe-core switched to nanbield in:
  https://git.openembedded.org/openembedded-core/commit/?id=f212cb12a0db9c9de5afd3cc89b1331d386e55f6

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Author: kraj

meta-chromium/conf/layer.conf

@@ -9,6 +9,6 @@ BBFILE_PATTERN_chromium-browser-layer := "^${LAYERDIR}/"
 BBFILE_PRIORITY_chromium-browser-layer = "7"
 
 LAYERVERSION_chromium-browser-layer = "1"
-LAYERSERIES_COMPAT_chromium-browser-layer = "dunfell gatesgarth hardknott honister kirkstone langdale mickledore"
+LAYERSERIES_COMPAT_chromium-browser-layer = "dunfell gatesgarth hardknott honister kirkstone langdale mickledore nanbield"
 
 LAYERDEPENDS_chromium-browser-layer = "clang-layer core openembedded-layer"

meta-firefox/conf/layer.conf

@@ -113,6 +113,6 @@ BBFILE_PATTERN_firefox-browser-layer := "^${LAYERDIR}/"
 BBFILE_PRIORITY_firefox-browser-layer = "7"
 
 LAYERVERSION_firefox-browser-layer = "1"
-LAYERSERIES_COMPAT_firefox-browser-layer = "dunfell gatesgarth hardknott honister kirkstone mickledore"
+LAYERSERIES_COMPAT_firefox-browser-layer = "dunfell gatesgarth hardknott honister kirkstone mickledore nanbield"
 
 LAYERDEPENDS_firefox-browser-layer = "clang-layer core openembedded-layer"