Reference glyph icon for the relevant chain instead of hardcoded for ethereum

Makefile

@@ -69,7 +69,9 @@ ICONNAME=icons/nanos_app_$(CHAIN).gif
 else ifeq ($(TARGET_NAME),TARGET_FATSTACKS)
 ICONNAME=icons/stax_app_$(CHAIN).gif
 DEFINES += ICONGLYPH=C_stax_app_$(CHAIN)_64px
+DEFINES += ICONGLYPH_SMALL=C_stax_app_$(CHAIN)
 GLYPH_FILES += icons/stax_app_$(CHAIN)_64px.gif
+GLYPH_FILES += icons/stax_app_$(CHAIN).gif
 else
 ICONNAME=icons/nanox_app_$(CHAIN).gif
 endif

src_nbgl/ui_idle.c

@@ -24,7 +24,7 @@ void ui_idle(void) {
     if (plugin_name != NULL) { // plugin
             nbgl_useCasePlugInHome((char*)plugin_name,
                                    APPNAME,
-                                   &C_stax_app_ethereum,
+                                   &ICONGLYPH_SMALL,
                                    NULL,
                                    NULL,
                                    true,
@@ -49,7 +49,7 @@ void ui_idle(void) {
             default:
                 nbgl_useCasePlugInHome(app_name ? app_name : "???",
                                        APPNAME,
-                                       &C_stax_app_ethereum,
+                                       &ICONGLYPH_SMALL,
                                        NULL,
                                        NULL,
                                        true,