Add stm32f429i-disc1 target and pw_dumb_io
Adds both the stm32f429i-disc1 target and a pw_dumb_io uart-based
backend.
Change-Id: If24379118fc2877485653d61ca66ceeb59ef920a
diff --git a/pw_vars_default.gni b/pw_vars_default.gni
index b2eed99..80a4a8a 100644
--- a/pw_vars_default.gni
+++ b/pw_vars_default.gni
@@ -24,7 +24,8 @@
# The name of the GN target type used to build Pigweed executables.
#
# If this is a custom template, the .gni file containing the template must
- # be imported at the top of this file to make it globally available.
+ # be imported at the top of the target configuration file to make it globally
+ # available.
target_type = "executable"
# Path to an instantiation of the "linker_script" GN template defining the