[nrf noup] boards: nrf54l15: Disable FPROTECT

FPROTECT is not suppored yet for nrf54l15.

Signed-off-by: Grzegorz Chwierut <[email protected]>
Signed-off-by: Gerard Marull-Paretas <[email protected]>
(cherry picked from commit 0b5810d)

Author: gchwier

boot/zephyr/boards/nrf54l15pdk_nrf54l15_cpuapp.conf

@@ -7,4 +7,7 @@ CONFIG_BOOT_MAX_IMG_SECTORS=256
 # Ensure that the SPI NOR driver is disabled by default
 CONFIG_SPI_NOR=n
 
+# TODO: below are not yet supported and need fixing
+CONFIG_FPROTECT=n
+
 CONFIG_BOOT_WATCHDOG_FEED=n