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/include/acpi/acpi.h

@@ -1267,7 +1267,7 @@ void acpi_create_slit(acpi_slit_t *slit,
  * proximimity domain for the memory.
  */
 int acpi_create_hmat_mpda(acpi_hmat_mpda_t *mpda, u32 initiator, u32 memory);
-/* Create Heterogenous Memory Attribute Table */
+/* Create Heterogeneous Memory Attribute Table */
 void acpi_create_hmat(acpi_hmat_t *hmat,
 		      unsigned long (*acpi_fill_hmat)(unsigned long current));