uboot-openmoko: undo mickey damage that broke *everyones* build due to parse errors

diff --git a/packages/uboot/uboot-openmoko_1.3.0+svn.bb b/packages/uboot/uboot-openmoko_svn.bb
similarity index 100%
rename from packages/uboot/uboot-openmoko_1.3.0+svn.bb
rename to packages/uboot/uboot-openmoko_svn.bb