Update .gitignore files based on svn:ignore properties

For the top-level .gitignore, do this via the existing patch.

(cherry picked from commit 55cf50555a)

debian/.gitignore

@@ -1,5 +1,18 @@
 !/patches
 !*.patch
 !*.diff
+*.debhelper*
+*.local
 *.pyc
+*.substvars
+*-di
+/build/
+/config.defines.dump
+/control
+/control.md5sum
+/files
+/linux-*
 /po/
+/rules.gen
+/stamps/
+/xen-linux-system-*

debian/changelog

@@ -9,6 +9,8 @@ linux (4.1.3-2) UNRELEASED; urgency=medium
   * [x86] iio: Enable drivers for ACPI-discoverable devices as modules:
     AK8975, BMC150_ACCEL, BMG160, BMP280, INV_MPU6050_IIO, JSA1212, KMX61,
     KXCJK1013, MMA9551, MMA9553, SX9500
+  * Adjust for migration to git:
+    - Update .gitignore files
 
  -- Ian Campbell <ijc@debian.org>  Tue, 04 Aug 2015 19:31:45 +0100
 

debian/patches/debian/gitignore.patch

@@ -3,9 +3,11 @@ Date: Thu, 17 Jan 2013 08:55:21 +0000
 Subject: Tweak gitignore for Debian pkg-kernel using git svn.
 Forwarded: not-needed
 
+[bwh: Tweak further for pure git]
+
 --- a/.gitignore
 +++ b/.gitignore
-@@ -49,22 +49,11 @@ Module.symvers
+@@ -50,22 +50,11 @@ Module.symvers
  /Module.markers
  
  #
@@ -28,3 +30,13 @@ Forwarded: not-needed
  # Generated include files
  #
  include/config
+@@ -106,3 +95,9 @@ all.config
+ 
+ # Kdevelop4
+ *.kdev4
++
++#
++# Debian packaging: ignore everything at the top level, since it isn't
++# included in our repository
++#
++/*