staging: ks7010: replace cast type in assignment in hostif_sme_set_pmksa

There is an assignment inside hostif_sme_set_pmksa function
which is being used together with cpu_to_le16 using uint16_t as cast
type. Replace it to use 'u16' instead.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>