drivers: i2c: nrfx_twis: fix missing SoC header include

In case of nRF TWIS i2c shim, SoC header include is needed
for memory region property presence checker macro.

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

Author: nika-nordic

drivers/i2c/i2c_nrfx_twis.c

@@ -10,7 +10,7 @@
 #include <zephyr/linker/devicetree_regions.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/pm/device.h>
-
+#include <soc.h>
 #include <nrfx_twis.h>
 #include <string.h>