hikey: do not call hisi-idt.py with hardcoded python command

Let hisi-idt.py decide which python interpreter is used based on the
hashbang line. Calling "python" can cause compatibility problems when
"python" is Python 2 but the script needs Python3.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>

hikey.mk

@@ -347,7 +347,7 @@ recovery:
 	@echo
 	$(call flash_help)
 	@echo
-	python $(ROOT)/burn-boot/hisi-idt.py --img1=$(LLOADER_PATH)/recovery.bin
+	$(ROOT)/burn-boot/hisi-idt.py --img1=$(LLOADER_PATH)/recovery.bin
 	fastboot flash loader $(LLOADER_PATH)/l-loader.bin
 	@echo
 	@echo "3. Wait until you see the (UART) message"