Adding make style

HACKING

@@ -11,8 +11,9 @@ Here are some directions to get you started:
      is consistent in style and thus easier to read.
      Look around and respect the same style.
      Don't use tabs. Increment unit is two spaces.
-     Don't leave dandling spaces or tabs at EOL. Helper script:
-     $ find . -name '*.[ch]' -exec perl -pi -e 's/[ \t]+$//;' {} \;
+     Don't leave dandling spaces or tabs at EOL.
+     Helper script to get some uniformity in the style:
+     $ make style
 
   2. Chase warnings: no warning should be introduced by your changes
   Depending what you touch, you can check with:

Makefile.am

@@ -16,7 +16,7 @@ CLEANFILES = Doxygen.log coverage.info libnfc.pc
 
 clean-local: clean-local-doc clean-local-coverage
 
-.PHONY: clean-local-coverage clean-local-doc doc
+.PHONY: clean-local-coverage clean-local-doc doc style
 clean-local-coverage:
 	-rm -rf coverage
 
@@ -28,3 +28,10 @@ doc : Doxyfile
 
 DISTCHECK_CONFIGURE_FLAGS="--with-drivers=all"
 
+style:
+	find . -name "*.[ch]" -exec perl -pi -e 's/[ \t]+$$//' {} \;
+	find . -name "*.[ch]" -exec astyle --formatted --mode=c --suffix=none \
+	    --indent=spaces=2 --indent-switches --indent-preprocessor \
+	    --keep-one-line-blocks --max-instatement-indent=60 \
+	    --brackets=linux --pad-oper --unpad-paren --pad-header \
+	    --align-pointer=name {} \;