stm32/boards/PYBD_SF2: Put BTstack library in external QSPI XIP flash.
In the same way the nimble stack is put there.
@@ -48,6 +48,7 @@ SECTIONS
.text_ext :
{
. = ALIGN(4);
+ *lib/btstack/*(.text* .rodata*)
*lib/mbedtls/*(.text* .rodata*)
*lib/mynewt-nimble/*(.text* .rodata*)
. = ALIGN(512);
