doc: FIT image: fix incorrect description of DT node unit address

The DT spec demands a unit-address in a node name to match the "reg"
property in that node. Newer dtc versions will throw warnings if this is
not the case.
Fix all occurences in the FIT image documentation files where this was not
observed, to not give bad examples to the reader.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/doc/uImage.FIT/x86-fit-boot.txt b/doc/uImage.FIT/x86-fit-boot.txt
index 02238f9..88d3460 100644
--- a/doc/uImage.FIT/x86-fit-boot.txt
+++ b/doc/uImage.FIT/x86-fit-boot.txt
@@ -197,7 +197,7 @@
 $ dumpimage -l image.fit
 FIT description: Simple image with single Linux kernel on x86
 Created:         Tue Oct  7 10:57:24 2014
- Image 0 (kernel@1)
+ Image 0 (kernel)
   Description:  Vanilla Linux kernel
   Created:      Tue Oct  7 10:57:24 2014
   Type:         Kernel Image
@@ -209,7 +209,7 @@
   Entry Point:  0x00000000
   Hash algo:    sha1
   Hash value:   446b5163ebfe0fb6ee20cbb7a8501b263cd92392
- Image 1 (setup@1)
+ Image 1 (setup)
   Description:  Linux setup.bin
   Created:      Tue Oct  7 10:57:24 2014
   Type:         x86 setup.bin
@@ -217,10 +217,10 @@
   Data Size:    12912 Bytes = 12.61 kB = 0.01 MB
   Hash algo:    sha1
   Hash value:   a1f2099cf47ff9816236cd534c77af86e713faad
- Default Configuration: 'config@1'
- Configuration 0 (config@1)
+ Default Configuration: 'config-1'
+ Configuration 0 (config-1)
   Description:  Boot Linux kernel
-  Kernel:       kernel@1
+  Kernel:       kernel
 
 
 Booting the FIT