cmake(bugfix):elf link should depends on starupobjs crt0.o

fix the correct dependency sequence to prevent
startupobjs from not being generated before ELF linking.

Signed-off-by: xuxin19 <xuxin19@xiaomi.com>

cmake/nuttx_add_application.cmake

@@ -139,6 +139,9 @@ function(nuttx_add_application)
         set(TARGET "ELF_${TARGET}")
         add_library(${TARGET} ${SRCS})
         add_dependencies(${TARGET} apps_post)
+        if(TARGET STARTUP_OBJS)
+          add_dependencies(${TARGET} STARTUP_OBJS)
+        endif()
         if(NOT "${CMAKE_LD}" MATCHES "gcc$")
           set(USE_LINKER True)
         endif()