openrisc/litex: Update uart address

Recent litex socs will place the UART at 0xe0006800.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Joel Stanley 2021-08-26 22:59:44 +09:30 • committed by Stafford Horne
commit 7851155a1a