powerpc: Have git ignore generated files from dtc compile

Have git ignore generated files from dtc compile
Signed-off-by: NJon Smirl <jonsmirl@gmail.com>
Acked-by: NDavid Gibson <david@gibson.dropbear.id.au>
Acked-by: NSean MacLennan <smaclennan@pikatech.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/boot/.gitignore

@@ -36,3 +36,13 @@ zImage.pseries
 zconf.h
 zlib.h
 zutil.h
+fdt.c
+fdt.h
+fdt_ro.c
+fdt_rw.c
+fdt_strerror.c
+fdt_sw.c
+fdt_wip.c
+libfdt.h
+libfdt_internal.h
+

scripts/dtc/.gitignore

+dtc
+dtc-lexer.lex.c
+dtc-parser.tab.c
+dtc-parser.tab.h
+