style: use astyle instead of indent

.astylerc

@@ -0,0 +1,9 @@
+lineend=linux
+style=linux
+indent=spaces=8
+convert-tabs
+min-conditional-indent=0
+max-instatement-indent=120
+align-pointer=name
+max-code-length=120
+

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: install tools
-        run: sudo apt-get install indent
+        run: sudo apt-get install astyle
 
       - name: indent
         run: make indent-c

Makefile

@@ -94,7 +94,7 @@ dracut-util: util/util
 
 .PHONY: indent-c
 indent-c:
-	indent -i8 -nut -br -linux -l120 $(wildcard *.[ch] */*.[ch])
+	astyle -n --quiet --options=.astylerc $(wildcard *.[ch] */*.[ch])
 
 .PHONY: indent
 indent: indent-c