Endianness in AvalonST driver needs to be set

[s3bs]

AvalonST should match AvalonSTPkt in terms of driving endian-ness from the user config

cocotb-bus/src/cocotb_bus/drivers/avalon.py

Line 516 in 7962b53

word = BinaryValue(n_bits=len(self.bus.data), bigEndian=False)

vs

cocotb-bus/src/cocotb_bus/drivers/avalon.py

Lines 647 to 648 in 7962b53

	word = BinaryValue(n_bits=len(self.bus.data),
	bigEndian=self.config["firstSymbolInHighOrderBits"])