tests: modules: mcuboot: external_flash: disable gpio interrupts

They are not needed by the test and consumes Flash.

Signed-off-by: Nikodem Kastelik <[email protected]>

Author: nika-nordic

tests/modules/mcuboot/external_flash/sysbuild/mcuboot/prj.conf

@@ -24,3 +24,6 @@ CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
 
 # Use minimal C library instead of the Picolib
 CONFIG_MINIMAL_LIBC=y
+
+# Reduce GPIO driver size
+CONFIG_GPIO_NRFX_INTERRUPT=n