add debug targets to Makefile

Makefile

@@ -3,7 +3,7 @@
 STMHAL_BUILD_DIR=vendor/micropython/stmhal/build-TREZORV2
 
 help: ## show this help
-	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z0-9_-]+:.*?## / {printf "\033[36mmake %-15s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
+	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z0-9_-]+:.*?## / {printf "\033[36mmake %-18s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
 
 vendor: ## update git submodules
 	git submodule update --init
@@ -13,9 +13,15 @@ build: build_stmhal build_unix ## build both stmhal and 32-bit unix micropython
 build_stmhal: vendor ## build stmhal port
 	make -C vendor/micropython/stmhal
 
+build_stmhal_debug: vendor ## build stmhal port with debug symbols
+	make -C vendor/micropython/stmhal
+
 build_unix: vendor ## build 32-bit unix port
 	make -C vendor/micropython/unix MICROPY_FORCE_32BIT=1
 
+build_unix_debug: vendor ## build 32-bit unix port with debug symbols
+	make -C vendor/micropython/unix MICROPY_FORCE_32BIT=1 DEBUG=1
+
 build_cross: vendor ## build 32-bit mpy-cross port
 	make -C vendor/micropython/mpy-cross MICROPY_FORCE_32BIT=1
 
@@ -25,6 +31,9 @@ build_frozen: vendor build_cross ## build 32-bit unix port with frozen modules (
 build_unix64: vendor ## build 64-bit unix port
 	make -C vendor/micropython/unix
 
+build_unix64_debug: vendor ## build 64-bit unix port with debug symbols
+	make -C vendor/micropython/unix
+
 build_cross64: vendor ## build 64-bit mpy-cross port
 	make -C vendor/micropython/mpy-cross