CherryECAT v1.1.1

• update: support slaves without COE
• update(hpmicro): add csv & csp demo
• fix(hpmicro): fix txbuffer mapping in hpm67, use ETH_ALEN for mac array
• fix(dc_ref_clock): null pointer dereference in ec_master_find_dc_ref_clock @coinlockerbaby
• fix(sii): correct bitmask check in EEPROM error detection @coinlockerbaby
• fix(slave): some slaves do not support 1c12 & 1c13 with 2 bytes