[nrf fromtree] tests: boards: nrf: dmm: Align test to changes in DMM

Align to API changes.

Signed-off-by: Krzysztof Chruściński <[email protected]>
(cherry picked from commit 8cc4da3)

Author: nordic-krch

tests/boards/nrf/dmm/src/main.c

@@ -28,7 +28,7 @@
 
 #if CONFIG_DCACHE
 BUILD_ASSERT(DMM_ALIGN_SIZE(DUT_CACHE) == CONFIG_DCACHE_LINE_SIZE);
-BUILD_ASSERT(DMM_ALIGN_SIZE(DUT_NOCACHE) == 1);
+BUILD_ASSERT(DMM_ALIGN_SIZE(DUT_NOCACHE) == sizeof(uint32_t));
 #endif
 
 struct dmm_test_region {