make+docs: pull in modules patch

mobile/README.md

@@ -13,16 +13,8 @@ To build for Android, you need either
 
 ### Go and Go mobile
 
-First, follow the instructions to [install Go](https://github.com/lightningnetwork/lnd/blob/master/docs/INSTALL.md#building-a-development-version-from-source).
-
-Then, install [Go mobile](https://github.com/golang/go/wiki/Mobile) and 
-initialize it:
-
-```shell
-go install golang.org/x/mobile/cmd/gomobile@latest
-go mod download golang.org/x/mobile
-gomobile init
-```
+First, follow the instructions to [install
+Go](https://github.com/lightningnetwork/lnd/blob/master/docs/INSTALL.md#building-a-development-version-from-source).
 
 ### Docker
 
@@ -42,14 +34,8 @@ Note that `gomobile` only supports building projects from `$GOPATH` at this
 point. However, with the introduction of Go modules, the source code files are 
 no longer installed there by default.
 
-To be able to do so, we must turn off module and using the now deprecated 
-`go get` command before turning modules back on again.
-
 ```shell
-go env -w GO111MODULE="off"
-go get github.com/lightningnetwork/lnd
-go get golang.org/x/mobile/bind
-go env -w GO111MODULE="on"
+git clone https://github.com/lightningnetwork/lnd.git $GOPATH/src/github.com/lightningnetwork/lnd
 ```
 
 Finally, let’s change directory to the newly created lnd folder inside `$GOPATH`:
@@ -58,13 +44,21 @@ Finally, let’s change directory to the newly created lnd folder inside `$GOPAT
 cd $GOPATH/src/github.com/lightningnetwork/lnd
 ```
 
-It is not recommended building from the master branch for mainnet. To checkout
+It is not recommended building from the master branch for mainnet. To check out
 the latest tagged release of lnd, run
 
 ```shell
 git checkout $(git describe --match "v[0-9]*" --abbrev=0)
 ```
 
+Then, install [Go mobile](https://github.com/golang/go/wiki/Mobile) and
+initialize it:
+
+```shell
+go install golang.org/x/mobile/cmd/gomobile
+gomobile init
+```
+
 ### iOS
 
 ```shell