soc: microchip: sama7g5: sam: update MMU setting for sama7g5 TRNG

Update TRNG registers with strong ordered, read and write access.

Signed-off-by: Tony Han <tony.han@microchip.com>

Author: TonyHan11

soc/microchip/sam/sama7g5/soc.c

@@ -30,6 +30,11 @@ static const struct arm_mmu_region mmu_regions[] = {
 
 	MMU_REGION_FLAT_ENTRY("sckc", SCKC_BASE_ADDRESS, 0x4,
 			      MT_STRONGLY_ORDERED | MPERM_R | MPERM_W),
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(trng))
+	MMU_REGION_FLAT_ENTRY("trng", TRNG_BASE_ADDRESS, 0x100,
+			      MT_STRONGLY_ORDERED | MPERM_R | MPERM_W),
+#endif
 };
 
 const struct arm_mmu_config mmu_config = {