ARM: add 'uinstall' target for installing uboot kernels

We have 'install' and 'zinstall' for installing Image and zImage
kernels, so add 'uinstall' to complete the set.

This allows developers to have a ~/bin/installkernel script which (eg)
copies the kernel to the tftp server automatically once the kernel
has built, resulting in a better workflow.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index c22c1ad..da525bc 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -280,7 +280,7 @@
 zImage Image xipImage bootpImage uImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 
-zinstall install: vmlinux
+zinstall uinstall install: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 
 # We use MRPROPER_FILES and CLEAN_FILES now
@@ -301,6 +301,7 @@
   echo  '                  (supply initrd image via make variable INITRD=<path>)'
   echo  '  install       - Install uncompressed kernel'
   echo  '  zinstall      - Install compressed kernel'
+  echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
   echo  '                  install to $$(INSTALL_PATH) and run lilo'