[YCONFIG] Add silicon-vendor-related configurations

Signed-off-by: Nicola Sparnacci <nicola.sparnacci@seco.com>

conf/Yconfig/Yconfig_hw_configuration → conf/Yconfig/Yconfig_silicon_vendor

@@ -4,13 +4,12 @@ menu "Raspberry Pi Settings"
     config RPI_ACCEPT_SYNAPTIC_KILLSWITCH_LICENSE
         bool "Automatically accept Raspberry Pi synaptic-killswitch license"
         depends on ARCH_ARCHITECTURE_rpi
-        select YS-APPEND_LICENSE-FLAGS-ACCEPTED
         help
             Automatically accept Raspberry Pi synaptic-killswitch license.
 endmenu
 
 config YS-APPEND_LICENSE-FLAGS-ACCEPTED
     string
-    default "synaptics-killswitch"
+    default "synaptics-killswitch" if RPI_ACCEPT_SYNAPTIC_KILLSWITCH_LICENSE
     depends on RPI_ACCEPT_SYNAPTIC_KILLSWITCH_LICENSE