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/acpi/device.c

@@ -139,7 +139,7 @@ static ssize_t acpi_device_path_fill(const struct device *dev, char *buf,
 
 /*
  * Warning: just as with dev_path() this uses a static buffer
- * so should not be called mulitple times in one statement
+ * so should not be called multiple times in one statement
  */
 const char *acpi_device_path(const struct device *dev)
 {