power: supply: qcom: Add real_type sysfs node for hvdcp type detection

Add real_type power supply property to USB for hvdcp type detection
and update power supply type based on real type.

CRs-Fixed: 2209780
Change-Id: Ied13cd6c9bbe5a0298bfeadc8725ac3abb2da0a8
Signed-off-by: Vamshi Krishna B V <vbv@codeaurora.org>