Related to #17997, move an include out of a extern "C" block
Background:
Declarations that use C linkage should be placed within extern "C"
so the language linkage is correct when the header is included by
a C++ compiler.
Similarly #include directives should be outside the extern "C" to
ensure the language-specific default linkage is applied to any
declarations provided by the included header.
See: https://en.cppreference.com/w/cpp/language/language_linkage
Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>
For native_posix:
Added the option to control the speed of the simualated time vs
the real(host) time.
Added a model of a real time clock with an API.
In the documentation we clarify the relationship between simulated
time and real time, and include documentaion of this new RTC.
Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>