make patches git am-able

raw diffs can be applied using `git apply` but not with `git am`. git
patches, e.g. through `git format-patch` are both apply-able and am-able

llm/generate/gen_common.sh

@@ -69,22 +69,10 @@ git_module_setup() {
 }
 
 apply_patches() {
-    # Wire up our CMakefile
-    if ! grep ollama ${LLAMACPP_DIR}/CMakeLists.txt; then
-        echo 'add_subdirectory(../ext_server ext_server) # ollama' >>${LLAMACPP_DIR}/CMakeLists.txt
-    fi
-
-    if [ -n "$(ls -A ../patches/*.diff)" ]; then
-        # apply temporary patches until fix is upstream
-        for patch in ../patches/*.diff; do
-            for file in $(grep "^+++ " ${patch} | cut -f2 -d' ' | cut -f2- -d/); do
-                (cd ${LLAMACPP_DIR}; git checkout ${file})
-            done
-        done
-        for patch in ../patches/*.diff; do
-            (cd ${LLAMACPP_DIR} && git apply ${patch})
-        done
-    fi
+    # apply temporary patches until fix is upstream
+    for patch in ../patches/*.patch; do
+        git -c 'user.name=nobody' -c 'user.email=<>' -C ${LLAMACPP_DIR} am ${patch}
+    done
 }
 
 build() {