Skip unsupported firmware check message in silent mode (#5765)

diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk
index 0edf6ad..e51dbfe 100644 (file)
--- a/tmk_core/rules.mk
+++ b/tmk_core/rules.mk
@@ -416,7 +416,7 @@ check-size:
        fi
 else
 check-size:
-       echo "(Firmware size check does not yet support $(MCU) microprocessors; skipping.)"
+       $(SILENT) || echo "(Firmware size check does not yet support $(MCU) microprocessors; skipping.)"
 endif
 
 # Create build directory