[PATCH] Add cross compile dependecy info for ARMv7

[Peter Polgar]

This commit adds info about the needed package to cross compile
U-Boot to ARMv7 (32 bit) architecture on Debian based distros.
---
 doc/build/gcc.rst | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/doc/build/gcc.rst b/doc/build/gcc.rst
index d8fcfdc4bf..c552e7b590 100644
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -19,6 +19,12 @@ You could install GCC and the GCC cross compiler
for the ARMv8 architecture with

     sudo apt-get install gcc gcc-aarch64-linux-gnu

+For the ARMv7 architecture (32 bit)  use the below command instead
+
+.. code-block:: bash
+
+    sudo apt-get install gcc crossbuild-essential-armhf
+
 Depending on the build targets further packages maybe needed

 .. code-block:: bash
@@ -118,6 +124,12 @@ Assuming cross compiling on Debian for ARMv8 this would be

     CROSS_COMPILE=aarch64-linux-gnu- make

+Also on Debian but for ARMv7 it would be
+
+.. code-block:: bash
+
+    CROSS_COMPILE=arm-linux-gnueabihf- make
+
 Out-of-tree building
 ~~~~~~~~~~~~~~~~~~~~

-- 
2.43.0