Bump buildroot to 2019.02

bsp/buildroot/board/hardkernel/odroidxu4/genimage.cfg

@@ -0,0 +1,54 @@
+image boot.vfat {
+	vfat {
+		files = {
+			"boot.ini",
+			"zImage",
+			"exynos5422-odroidxu4.dtb"
+		}
+	}
+	size = 32M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+
+	partition bl1 {
+		in-partition-table = "no"
+		image = "bl1.bin.hardkernel"
+		offset = 512
+		size = 15360
+	}
+
+	partition bl2 {
+		in-partition-table = "no"
+		image = "bl2.bin.hardkernel.720k_uboot"
+		offset = 15872
+		size = 16384
+	}
+
+	partition u-boot {
+		in-partition-table = "no"
+		image = "u-boot-dtb.bin"
+		offset = 32256
+		size = 720k
+	}
+
+	partition tzsw {
+		in-partition-table = "no"
+		image = "tzsw.bin.hardkernel"
+		offset = 769536
+		size = 256k
+	}
+
+	partition vfat {
+		partition-type = 0xC
+		image = "boot.vfat"
+		offset = 2097152
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}