Merge branch 'andeen-hagerling-2550a' into '1.9.x'
andeen-hagerling 2550a capacitance bridge
See merge request !4091 (merged)
(cherry picked from commit a308d9e0)
db925770 ah2550a controller, and tango ds and spec macros
andeen-hagerling 2550a capacitance bridge
See merge request !4091 (merged)
(cherry picked from commit a308d9e0)
db925770 ah2550a controller, and tango ds and spec macros