README: Drop CONFIG_SYS_USB_BRG_CLK

This is not used in U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/README b/README
index c4585d2..f4892fa 100644 (file)
--- a/README
+++ b/README
@@ -1481,10 +1481,6 @@ The following options need to be configured:
                                Derive USB clock from external clock "blah"
                                - CONFIG_SYS_USB_EXTC_CLK 0x02
 
-                               CONFIG_SYS_USB_BRG_CLK 0xBLAH
-                               Derive USB clock from brgclk
-                               - CONFIG_SYS_USB_BRG_CLK 0x04
-
                If you have a USB-IF assigned VendorID then you may wish to
                define your own vendor specific values either in BoardName.h
                or directly in usbd_vendor_info.h. If you don't define