Enabling "BOOTLOADER_ALWAYSENTERPROGRAMMODE" ignores bootLoaderCondition()
(BUT NOT bootLoaderConditionSimple()) and always enter the program-mode.
This is helpful to emulate behaviour of Arduino bootloaders
Use "-DCONFIG_HAVE__BOOTLOADER_ALWAYSENTERPROGRAMMODE" within
DEFINES variable of Makefile.inc to enable this feature.
Otherwise default is off.
Signed-off-by: Stephan Baerwolf <stephan.baerwolf@tu-ilmenau.de>