Makefile: Set APP_LOAD_PARAMS before including Makefile.rules

This will become necessary once
LedgerHQ/ledger-secure-sdk#472 is merged and
cherry-picked.

Makefile

@@ -153,12 +153,6 @@ all: default
 #   Build    #
 ##############
 
-# import generic rules from the sdk
-include $(BOLOS_SDK)/Makefile.rules
-
-#add dependency on custom makefile filename
-dep/%.d: %.c Makefile
-
 listvariants:
 	@echo VARIANTS COIN cardano_ada
 
@@ -203,3 +197,6 @@ format:
 
 size: all
 	$(GCCPATH)arm-none-eabi-size --format=gnu bin/app.elf
+
+# import generic rules from the sdk
+include $(BOLOS_SDK)/Makefile.rules