arm/dt: msm8974: Force the proper types for some regulators

pm8841_s2, pm8841_s(4-8) all report the wrong type and subtype
for FTS2 CTRL peripherals. Also, pm8941_l5 and pm8941_l7 are
not reported as LDOs correctly. Specify them as the correct
type and subtype using the qcom,force-type binding.

Change-Id: I282ef934e38da5ad3faba3ea34258630cf8b7366
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>