Add memory size information to STM32 build output

Adds linker flag to display memory size information after building to STM32 platform
libopencm3.cmake configuration file.

Signed-off-by: Winford <winford@object.stream>

Author: UncleGrumpy

src/platforms/stm32/cmake/libopencm3.cmake

@@ -145,7 +145,7 @@ message(STATUS "Generated Linker File   : ${CMAKE_CURRENT_BINARY_DIR}/${LINKER_S
 # ARCH_FLAGS has to be passed as a string here
 JOIN("${ARCH_FLAGS}" " " ARCH_FLAGS)
 # Set linker flags
-set(LINKER_FLAGS "${LINKER_FLAGS} -specs=nosys.specs -nostartfiles -Wl,--undefined,_printf_float -Wl,--undefined,_scanf_float -T${CMAKE_CURRENT_BINARY_DIR}/${LINKER_SCRIPT} ${ARCH_FLAGS}")
+set(LINKER_FLAGS "${LINKER_FLAGS} -specs=nosys.specs -nostartfiles -Wl,--undefined,_printf_float -Wl,--undefined,_scanf_float -Wl,--print-memory-usage -T${CMAKE_CURRENT_BINARY_DIR}/${LINKER_SCRIPT} ${ARCH_FLAGS}")
 message(STATUS "Linker Flags            : ${LINKER_FLAGS}")
 
 # Compiler flags