src/acpi to src/lib: Fix spelling errors

These issues were found and fixed by codespell, a useful tool for
finding spelling errors.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: I5b8ecdfe75d99028fee820a2034466a8ad1c5e63
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58080
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/lib/device_tree.c

@@ -758,7 +758,7 @@ struct device_tree_node *dt_find_compat(struct device_tree_node *parent,
 }
 
 /*
- * Find the next compatible child of a given parent. All children upto the
+ * Find the next compatible child of a given parent. All children up to the
  * child passed in by caller are ignored. If child is NULL, it considers all the
  * children to find the first child which is compatible.
  *