fixup! kmeans: Enable for external C build

Author: jonnor

src/emlearn_kmeans/Makefile

@@ -13,7 +13,7 @@ DIST_DIR := ../../dist/$(ARCH)_$(MPY_ABI_VERSION)
 MOD = emlearn_kmeans
 
 # Source files (.c or .py)
-SRC = kmeans.c kmeans.py
+SRC = kmeans.c emlearn_kmeans.py
 
 # enable linking of libm etc
 LINK_RUNTIME=1