ci: make realclean before atf rebuild

else "nothing to do"

Author: frank-w

.github/workflows/build.yml

@@ -140,18 +140,21 @@ jobs:
               echo "::group::atf extended"
               if [ "${RAM8G}" == "true" ]; then
                 echo "extraflags=DDR4_4BG_MODE=1" >> build.conf
+                make realclean
                 bash build.sh build
                 bash build.sh rename
               fi
 
               # optional special NAND/UBI case
               if [[ "${BOOT}" =~ nand|nor ]]; then
                 echo "extraflags=UBI=1" >> build.conf
+                make realclean
                 bash build.sh build
                 bash build.sh rename
 
                 if [ "${RAM8G}" == "true" ]; then
                   echo "extraflags=UBI=1 DDR4_4BG_MODE=1" >> build.conf
+                  make realclean
                   bash build.sh build
                   bash build.sh rename
                 fi