Connect xil_multiboot to g_aux1_sdb at top/cute_wr/wr_core_demo/cute_top.vhd

Fix g_aux_sdb to c_etherbone_sdb.

BusPath        VendorID         Product   BaseAddress(Hex)  Description
1              000000000000ce42:66cfeb52                 0  WB4-BlockRAM
2              0000000000000651:eef0b198             20000  WB4-Bridge-GSI
2.1            000000000000ce42:ab28633a             20000  WR-Mini-NIC
2.2            000000000000ce42:650c2d4f             20100  WR-Endpoint
2.3            000000000000ce42:65158dc0             20200  WR-Soft-PLL
2.4            000000000000ce42:de0d8ced             20300  WR-PPS-Generator
2.5            000000000000ce42:ff07fc47             20400  WR-Periph-Syscon
2.6            000000000000ce42:e2d13d04             20500  WR-Periph-UART
2.7            000000000000ce42:779c5443             20600  WR-Periph-1Wire
2.8            0000000000000651:68202b22             20700  Etherbone-Config
2.9            000000000000ce42:deadbeaf             20800  SPI-flash+Multiboot