samples: littlefs: add support for H3ULCB and Salvator XS M3

Add support of R-Car H3ULCB and Salvator XS M3 boards to
littlefs sample.

Signed-off-by: Mykola Kvach <[email protected]>

Author: xakep-amatop

samples/subsys/fs/littlefs/boards/rcar_h3ulcb_r8a77951_a57.conf

@@ -0,0 +1,17 @@
+#
+# Copyright (c) 2023 EPAM Systems
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+CONFIG_MAIN_STACK_SIZE=4096
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=8192
+CONFIG_FS_LITTLEFS_FC_HEAP_SIZE=8192
+
+CONFIG_DISK_ACCESS=y
+CONFIG_DISK_DRIVERS=y
+CONFIG_DISK_DRIVER_MMC=y
+
+CONFIG_FS_LITTLEFS_BLK_DEV=y
+CONFIG_APP_LITTLEFS_STORAGE_BLK_SDMMC=y
+
+CONFIG_FS_LITTLEFS_FMP_DEV=n

samples/subsys/fs/littlefs/boards/rcar_h3ulcb_r8a77951_a57.overlay

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+&emmc2 {
+	disk {
+		status = "okay";
+	};
+	status = "okay";
+};

samples/subsys/fs/littlefs/boards/rcar_salvator_xs.conf

@@ -0,0 +1,17 @@
+#
+# Copyright (c) 2023 EPAM Systems
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+CONFIG_MAIN_STACK_SIZE=4096
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=8192
+CONFIG_FS_LITTLEFS_FC_HEAP_SIZE=8192
+
+CONFIG_DISK_ACCESS=y
+CONFIG_DISK_DRIVERS=y
+CONFIG_DISK_DRIVER_MMC=y
+
+CONFIG_FS_LITTLEFS_BLK_DEV=y
+CONFIG_APP_LITTLEFS_STORAGE_BLK_SDMMC=y
+
+CONFIG_FS_LITTLEFS_FMP_DEV=n

samples/subsys/fs/littlefs/boards/rcar_salvator_xs.overlay

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+&emmc2 {
+	disk {
+		status = "okay";
+	};
+	status = "okay";
+};

samples/subsys/fs/littlefs/sample.yaml

@@ -20,6 +20,8 @@ tests:
       - mimxrt1160_evk/mimxrt1166/cm7
       - lpcxpresso55s69/lpc55s69/cpu0
       - mr_canhubk3
+      - rcar_h3ulcb/r8a77951/a57
+      - rcar_salvator_xs
       - stm32f429i_disc1
       - stm32f746g_disco
       - stm32h747i_disco/stm32h747xx/m7