doc: Bring in the FIT examples

Convert these to rST format and add them to the index.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/usage/fit/multi.rst b/doc/usage/fit/multi.rst
new file mode 100644
index 0000000..2e6ae58
--- /dev/null
+++ b/doc/usage/fit/multi.rst
@@ -0,0 +1,136 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Multiple kernels, ramdisks and FDT blobs
+========================================
+
+::
+
+    /dts-v1/;
+
+    / {
+        description = "Various kernels, ramdisks and FDT blobs";
+        #address-cells = <1>;
+
+        images {
+            kernel-1 {
+                description = "vanilla-2.6.23";
+                data = /incbin/("./vmlinux.bin.gz");
+                type = "kernel";
+                arch = "ppc";
+                os = "linux";
+                compression = "gzip";
+                load = <00000000>;
+                entry = <00000000>;
+                hash-1 {
+                    algo = "md5";
+                };
+                hash-2 {
+                    algo = "sha1";
+                };
+            };
+
+            kernel-2 {
+                description = "2.6.23-denx";
+                data = /incbin/("./2.6.23-denx.bin.gz");
+                type = "kernel";
+                arch = "ppc";
+                os = "linux";
+                compression = "gzip";
+                load = <00000000>;
+                entry = <00000000>;
+                hash-1 {
+                    algo = "sha1";
+                };
+            };
+
+            kernel-3 {
+                description = "2.4.25-denx";
+                data = /incbin/("./2.4.25-denx.bin.gz");
+                type = "kernel";
+                arch = "ppc";
+                os = "linux";
+                compression = "gzip";
+                load = <00000000>;
+                entry = <00000000>;
+                hash-1 {
+                    algo = "md5";
+                };
+            };
+
+            ramdisk-1 {
+                description = "eldk-4.2-ramdisk";
+                data = /incbin/("./eldk-4.2-ramdisk");
+                type = "ramdisk";
+                arch = "ppc";
+                os = "linux";
+                compression = "gzip";
+                load = <00000000>;
+                entry = <00000000>;
+                hash-1 {
+                    algo = "sha1";
+                };
+            };
+
+            ramdisk-2 {
+                description = "eldk-3.1-ramdisk";
+                data = /incbin/("./eldk-3.1-ramdisk");
+                type = "ramdisk";
+                arch = "ppc";
+                os = "linux";
+                compression = "gzip";
+                load = <00000000>;
+                entry = <00000000>;
+                hash-1 {
+                    algo = "crc32";
+                };
+            };
+
+            fdt-1 {
+                description = "tqm5200-fdt";
+                data = /incbin/("./tqm5200.dtb");
+                type = "flat_dt";
+                arch = "ppc";
+                compression = "none";
+                hash-1 {
+                    algo = "crc32";
+                };
+            };
+
+            fdt-2 {
+                description = "tqm5200s-fdt";
+                data = /incbin/("./tqm5200s.dtb");
+                type = "flat_dt";
+                arch = "ppc";
+                compression = "none";
+                load = <00700000>;
+                hash-1 {
+                    algo = "sha1";
+                };
+            };
+
+        };
+
+        configurations {
+            default = "config-1";
+
+            config-1 {
+                description = "tqm5200 vanilla-2.6.23 configuration";
+                kernel = "kernel-1";
+                ramdisk = "ramdisk-1";
+                fdt = "fdt-1";
+            };
+
+            config-2 {
+                description = "tqm5200s denx-2.6.23 configuration";
+                kernel = "kernel-2";
+                ramdisk = "ramdisk-1";
+                fdt = "fdt-2";
+            };
+
+            config-3 {
+                description = "tqm5200s denx-2.4.25 configuration";
+                kernel = "kernel-3";
+                ramdisk = "ramdisk-2";
+            };
+        };
+    };