sh: Add the rest of the boot targets to arch/sh/boot/.gitignore.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boot/.gitignore b/arch/sh/boot/.gitignore
index b6718de..aad5edd 100644
--- a/arch/sh/boot/.gitignore
+++ b/arch/sh/boot/.gitignore
@@ -1 +1,4 @@
 zImage
+vmlinux.srec
+uImage
+uImage.srec