secvar: fix endian conversion
secvar: fix endian conversion

unpack_timestamp() calls le32_to_cpu() for endian conversion of
uint16_t "year" value. This patch fixes the code to use le16_to_cpu().

Signed-off-by: Nayna Jain <bbeb09af140960e67718576df928683ab648bec4@linux.ibm.com>
Reviewed-by: Daniel Axtens <cf1af486034ab0119a20f38a060e40da25f4cea3@axtens.net>
Signed-off-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>

open-power/skiboot,open-power/skiboot,shenki/skiboot,open-power/skiboot,qemu/skiboot,qemu/skiboot,shenki/skiboot,legoater/skiboot,qemu/skiboot,legoater/skiboot,legoater/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,shenki/skiboot,legoater/skiboot,open-power/skiboot,qemu/skiboot,open-power/skiboot,shenki/skiboot