[Mellanox] Adjust Makefile for SDK/python-sdk-api to support both python2 and python3 (sonic-net#7848)

- Why I did it
Adjust the Makefile for SDK/python-SDK-API to support both python2 and python3

- How to verify it
Build the image and check whether python2 and python3 are both supported by SDK API.

Signed-off-by: Stephen Sun <[email protected]>

Author: stephenxs

platform/mellanox/sdk-src/python-sdk-api/Makefile

@@ -18,7 +18,7 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 		./autogen.sh
 	fi
 
-	debuild -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS)
+	debuild -e PYTHON_INTERPRETERS="\"python2 python3\"" -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS)
 
 	popd