crypto: stm32 - Fix spelling mistake "STMicrolectronics" -> "STMicroelectronics"

There is a spelling mistake in the module description text. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Maxime Méré <maxime.mere@foss.st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>