libfdt: Tweak description of assume-aligned load helpers

There's a small inaccuracy in the comment describing these new helpers.
This corrects it, and reformats while we're there.

Fixes: f98f28ab ("libfdt: Internally perform potentially unaligned loads")
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

libfdt/libfdt_internal.h

@@ -47,13 +47,13 @@ static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
 }
 
 /*
- * Internal helpers to access tructural elements of the device tree blob
- * (rather than for exaple reading integers from within property values).  We
- * assume that we are either given a naturally aligned address for the platform
- * or if we are not, we are on a platform where unaligned memory reads will be
- * handled in a graceful manner.  If this is not the case there are _unaligned
- * versions of these functions that follow and can be used.
- *
+ * Internal helpers to access tructural elements of the device tree
+ * blob (rather than for exaple reading integers from within property
+ * values).  We assume that we are either given a naturally aligned
+ * address for the platform or if we are not, we are on a platform
+ * where unaligned memory reads will be handled in a graceful manner.
+ * If not the external helpers fdtXX_ld() from libfdt.h can be used
+ * instead.
  */
 static inline uint32_t fdt32_ld_(const fdt32_t *p)
 {