power: smb5: Update DC PSY type to Wireless

"Wipower" refers to a particular wireless charging standard. Remove this
in favour of "Wireless" which is standards-agnostic.

Change-Id: I9197dfc6024260630390a2ec58f53c7b60f06b2b
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>