[microNPU] fix the CMake to keep utils.cc (apache#9630)

If the build does not use USE_ETHOSU ON,
it will report that Object definitions are missing.
This change will keep the file that has the Object
definitions.

Change-Id: I64776f941bf0475e10397ff2cdbfd73a909611a0

cmake/modules/contrib/EthosU.cmake

@@ -20,4 +20,10 @@ if(USE_ETHOSU)
        CONFIGURE_DEPENDS src/relay/backend/contrib/ethosu/*
        CONFIGURE_DEPENDS src/contrib/ethosu/cascader/*)
   list(APPEND COMPILER_SRCS ${COMPILER_ETHOSU_SRCS})
+else()
+  # Keeping just utils.cc because it has Object definitions
+  # used by python side
+  file(GLOB COMPILER_ETHOSU_SRCS
+          CONFIGURE_DEPENDS src/relay/backend/contrib/ethosu/utils.cc)
+  list(APPEND COMPILER_SRCS ${COMPILER_ETHOSU_SRCS})
 endif(USE_ETHOSU)