targets/xilinx: use generic name for idelay clk (avoid clk200, clk400, etc...) since we somtimes want to change it.

targets/s7/us: update sdram (manual cmd_latency no longer needed).

platforms/ulx3s: Update ULX3S SD pins for revision 2.0

versa_ecp5: Add --eth-phy to select ethernet phy

This also simplifies the logic a bit.

versa_ecp5: Add etherbone support

Etherbone can be enabled with --with-etherbone

Zedboard

  * remove unused code
  * remove oled integration code
  * openocd = default programmer

This uniformizes Fomu target with others, provide a simple example of LiteX SoC
on Fomu and will ease maintenance.

Add initial support for Trenz TEC0117 board

orangecrab: Fix r0.1 user_led mapping

crosslink_nx_evn: Improve documentation on UART jumpers

On r0.1, all three user_leds are mapped to the same pin.
Fix this by mapping them to the pins connected to the individual
channels of the RGB LED, to match the comments, the schematics, and the
spirit of r0.2.

Untested on real hardware (I have r0.2 only).

Fixes: c94cbae0 ("orangecrab: add user_led (RGB leds), DFUProg and --load support.")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

Using https://github.com/d953i/Custom_Part_Data_Files/blob/master/Boards/Xilinx_BCU1525/BCU1525_DIMMx.xdc

Using https://github.com/d953i/Custom_Part_Data_Files/blob/master/Boards/Xilinx_BCU1525/BCU1525_DIMM0.xdc.

Signed-off-by: David Shah <dave@ds0.me>

alveo_u250: Add PCIe x4 support

Add support for 5A-75E V6.0 board