RFR: JDK-8074990 Some times DIO VTS functional tests stops due to "java.lang.UnsatisfiedLinkError"

[Sergey Nazarkin]

issue: https://bugs.openjdk.java.net/browse/JDK-8074990
review: http://cr.openjdk.java.net/~snazarki/8074990/

Please review the fix for UnsatisfiedLinkError for UART.wrteAsynch0 
method caused by invalid JNI function name.

-- 
/Sergey