[ARM] 4216/1: add .gitignore entries for ARM specific files

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/boot/.gitignore

@@ -0,0 +1,2 @@
+Image
+zImage

arch/arm/boot/compressed/.gitignore

@@ -0,0 +1 @@
+piggy.gz

include/asm-arm/.gitignore

@@ -0,0 +1,2 @@
+arch
+mach-types.h