build.sh: cleanup before building alt wifi kernel

There’s a few commands that were used to clean it up before making the old alt kernel, these have been copied over.

Author: Redecorating

build.sh

@@ -78,7 +78,9 @@ echo "" >"${KERNEL_PATH}"/.scmversion
 make -j "$(getconf _NPROCESSORS_ONLN)" deb-pkg LOCALVERSION=-mbp KDEB_PKGVERSION="${KERNEL_VERSION}-$(get_next_version mbp)"
 
 # build alternate kernel with corellium's wifi patches, for MBP16,1/2/4 and MBA9,1
-
+echo >&2 "===]> Info: Create alternative kernel with corellium wifi patch... "
+make distclean
+make clean
 # reverse other wifi patches
 while IFS= read -r file; do
   echo "==> Reverting $file"
@@ -88,6 +90,9 @@ done < <(find "${WORKING_PATH}/patches" -type f -name "*.patch" | grep "brcmfmac
 echo "==> Adding wifi-bigsur.patch"
 curl https://raw.githubusercontent.com/jamlam/mbp-16.1-linux-wifi/4c8b393ed7a874e3d9e44a2a467c1b7c74af1260/wifi-bigsur.patch \
 | patch -p1
+cp "${WORKING_PATH}/templates/default-config" "${KERNEL_PATH}/.config"
+make olddefconfig
+echo "" >"${KERNEL_PATH}"/.scmversion
 
 make -j "$(getconf _NPROCESSORS_ONLN)" deb-pkg LOCALVERSION=-mbp-16x-wifi KDEB_PKGVERSION="${KERNEL_VERSION}-$(get_next_version mbp)"