This commit performs a minor change to the "pin_af_t" structure,
changing the data type used to store alternate function pin name QSTRs
in order to have a smaller impact on the .rodata section of the
firmware.
The data type used to store the QSTR name of the pin is changed from
"qstr" to "qstr_short_t", that is able to store the same name string
index but in half the size.
Other pin-related structures in the port that also store QSTRs do not
benefit from a narrower data type, as their members are mostly
word-aligned and thus the linker is forced to insert padding bytes
between entries.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
049cdd0dd3