board: qualcomm: Add MAINTAINERS entries for Dragonwing platforms

board: qualcomm: Add MAINTAINERS entries for Dragonwing platforms

Added MAINTAINERS entries for the Qualcomm Dragonwing platforms, following
the discussion in the referenced thread.
https://lore.kernel.org/u-boot/20250603192206.GK1382132@bill-the-cat/

Signed-off-by: Aswin Murugan <aswin.murugan@oss.qualcomm.com>
Reviewed-by: Casey Connolly <casey.connolly@linaro.org>
Acked-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Acked-by: Balaji Selvanathan <balaji.selvanathan@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250610093732.2060702-1-aswin.murugan@oss.qualcomm.com
Signed-off-by: Casey Connolly <casey.connolly@linaro.org>