[Add support HAL of ethernet switch gsw mode]

[Description]
Add support HAL of ethernet switch gsw mode
1. add DISTRO_FEATURES "switch_gsw_mode"
2. install switch tool when "switch_gsw_mode" feature enabled

[Release-log]

diff --git a/conf/machine/filogic830-32bit.conf b/conf/machine/filogic830-32bit.conf
index aef275c..6975c76 100644
--- a/conf/machine/filogic830-32bit.conf
+++ b/conf/machine/filogic830-32bit.conf
@@ -29,6 +29,8 @@
 DISTRO_FEATURES_append = " meshwifi"
 DISTRO_FEATURES_append = " ipv6"
 #DISTRO_FEATURES_append = " kernel_in_ubi"
+#DISTRO_FEATURES_append = " switch_gsw_mode"
+
 # kernel 5.4 gold linker 'arm-rdk-linux-gnueabi-ld' not supported
 #DISTRO_FEATURES_append = " referencepltfm "
 #DISTRO_FEATURES_remove = " ld-is-gold"