src/drivers/spi/tpm: Fix typo & capitalize TPM and IRQ

Change-Id: Ifb1e024821153865dd4a27a100f8a9c61151e0e1
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed