ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting

Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/tbxface.c

@@ -108,7 +108,7 @@ acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
 	/*
 	 * Get the root table (RSDT or XSDT) and extract all entries to the local
 	 * Root Table Array. This array contains the information of the RSDT/XSDT
-	 * in a common, more useable format.
+	 * in a common, more usable format.
 	 */
 	status = acpi_tb_parse_root_table(rsdp_address);
 	return_ACPI_STATUS(status);
@@ -169,7 +169,7 @@ acpi_status ACPI_INIT_FUNCTION acpi_reallocate_root_table(void)
 	if (!acpi_gbl_enable_table_validation) {
 		/*
 		 * Now it's safe to do full table validation. We can do deferred
-		 * table initilization here once the flag is set.
+		 * table initialization here once the flag is set.
 		 */
 		acpi_gbl_enable_table_validation = TRUE;
 		for (i = 0; i < acpi_gbl_root_table_list.current_table_count;