[package] gdb: fix patch directory after r33706

git-svn did not properly track this move, thanks to swalker for noticing.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33745 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/gdb/patches/001-siginfo_t.patch b/package/devel/gdb/patches/001-siginfo_t.patch
similarity index 100%
rename from package/gdb/patches/001-siginfo_t.patch
rename to package/devel/gdb/patches/001-siginfo_t.patch