[nrf noup] boot: zephyr: boards: Disabled NCS boot banner for thingy 53

Disabled NCS BOOT BANNER to save some flash, as Thingy:53 stopped
to fit in the mcuboot partition. The boot banner is not used
anyway, as logs are disabled.

Signed-off-by: Kamil Kasperczyk <[email protected]>
(cherry picked from commit 560cc01)

Author: kkasperczyk-no

boot/zephyr/boards/thingy53_nrf5340_cpuapp.conf

@@ -47,6 +47,7 @@ CONFIG_USB_CDC_ACM=y
 CONFIG_CBPRINTF_NANO=y
 CONFIG_TIMESLICING=n
 CONFIG_BOOT_BANNER=n
+CONFIG_NCS_BOOT_BANNER=n
 CONFIG_CONSOLE=n
 CONFIG_CONSOLE_HANDLER=n
 CONFIG_UART_CONSOLE=n