[POWERPC] Update .gitignore files

Update .gitignore as needed by dtc addition.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/boot/.gitignore b/arch/powerpc/boot/.gitignore
index 65f4118..b160322 100644
--- a/arch/powerpc/boot/.gitignore
+++ b/arch/powerpc/boot/.gitignore
@@ -1,4 +1,5 @@
 addnote
+dtc
 empty.c
 hack-coff
 infblock.c
diff --git a/arch/powerpc/boot/dtc-src/.gitignore b/arch/powerpc/boot/dtc-src/.gitignore
new file mode 100644
index 0000000..a7c3f94
--- /dev/null
+++ b/arch/powerpc/boot/dtc-src/.gitignore
@@ -0,0 +1,3 @@
+dtc-lexer.lex.c
+dtc-parser.tab.c
+dtc-parser.tab.h