tree-wide: Sort includes

This was done by running a locally built clang-format with
https://github.com/llvm/llvm-project/pull/137617 and
https://github.com/llvm/llvm-project/pull/137840 applied on all .c
and .h files.

src/boot/boot.c

@@ -7,8 +7,8 @@
 #include "devicetree.h"
 #include "drivers.h"
 #include "efi-string-table.h"
-#include "efivars-fundamental.h"
 #include "efivars.h"
+#include "efivars-fundamental.h"
 #include "export-vars.h"
 #include "graphics.h"
 #include "initrd.h"