projects/ad411x_ad717x/de10nano: add pullup for EEPROM I2C

Add pullup to I2C1 SDA/SCL pins in the ad411x_ad717x project. These are
connected to an EEPROM on the EVAL board. Neither the DE10-Nano or the
EVAL board has pullup resistors on this bus, so we need to do the pullup
in the FPGA.

Signed-off-by: David Lechner <dlechner@baylibre.com>

Author: dlech

projects/ad411x_ad717x/de10nano/system_project.tcl

@@ -47,4 +47,7 @@ set_location_assignment PIN_AH9   -to i2c_sda;   ## Arduino_IO14
 set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to i2c_scl
 set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to i2c_sda
 
+set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to i2c_scl
+set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to i2c_sda
+
 execute_flow -compile