regulators: Implement i2c_write_bit action

Implement the i2c_write_bit action in the JSON config file.  See
i2c_write_bit.md for more information about this action.

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: I3e056580da98ab89a13667077cb87cbd063630c9
diff --git a/phosphor-regulators/src/meson.build b/phosphor-regulators/src/meson.build
index 556c65b..d9734c3 100644
--- a/phosphor-regulators/src/meson.build
+++ b/phosphor-regulators/src/meson.build
@@ -10,6 +10,7 @@
     'actions/i2c_compare_bit_action.cpp',
     'actions/i2c_compare_byte_action.cpp',
     'actions/i2c_compare_bytes_action.cpp',
+    'actions/i2c_write_bit_action.cpp',
     'actions/i2c_write_byte_action.cpp',
     'actions/i2c_write_bytes_action.cpp'
 ]