soc: arm: smartbond: Set flash base address

Flash address is updated to 0x16000000, i.e. actual location instead of
remapped one. FLASH_BASE_ADDRESS is now set via dts.

Co-authored-by: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
Signed-off-by: Niek Ilmer <niek.ilmer.aj@renesas.com>
3 files changed