UART Exported constants

Modules
	UART Error Code
	UART Error Code.
	UART Word Length
	UART Number of Stop Bits
	UART Parity
	UART Hardware Flow Control
	UART Transfer Mode
	UART State
	UART Over Sampling
	UART LIN Break Detection Length
	UART Wakeup Functions
	UART FLags
	Elements values convention: 0xXXXX.
	UART Interrupt Definitions
	Elements values convention: 0xY000XXXX.