[U-Boot] [PATCH v11 16/16] misc: Add IHS FPGA driver

[sjg at google.com]

Add a driver for gdsys IHS (Integrated Hardware Systems) FPGAs, which
supports initialization of the FPGA, as well as information gathering.

Reviewed-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Mario Six <mario.six at gdsys.cc>

---
v10 -> v11:
No changes

v9 -> v10:
No changes

v8 -> v9:
No changes

v7 -> v8:
No changes

v6 -> v7:
No changes

v5 -> v6:
No changes

v4 -> v5:
No changes

v3 -> v4:
* Switched from 'res' as the name for return variables to 'ret'

v2 -> v3:
* Fixed style violations
* Added full documentation
* Extracted some magic numbers to constants
* Removed unnecessary includes
* Extracted wait_for_fpga_done
* Improved error handling and reporting
* Added device-tree-binding files
* Improved Kconfig entry

v1 -> v2:
New in v2
---
 .../bindings/misc/gdsys,iocon_fpga.txt        |  19 +
 .../bindings/misc/gdsys,iocpu_fpga.txt        |  19 +
 drivers/misc/Kconfig                          |   9 +
 drivers/misc/Makefile                         |   1 +
 drivers/misc/ihs_fpga.c                       | 867 ++++++++++++++++++
 drivers/misc/ihs_fpga.h                       |  49 +
 6 files changed, 964 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/gdsys,iocon_fpga.txt
 create mode 100644 Documentation/devicetree/bindings/misc/gdsys,iocpu_fpga.txt
 create mode 100644 drivers/misc/ihs_fpga.c
 create mode 100644 drivers/misc/ihs_fpga.h

Applied to u-boot-dm, thanks!