Enable kotlinc flags in blueprint files

Add support for adding kotlinc files in the module.

Some flags are unnecessary as they are added by
default (-no-jdk and -no-stdlib), or are not needed
on an Android build (-include-runtime), or may
conflict with the build (-kotlin-home and
-Xintellij-plugin-root), so the error stops the
build if they are added.

Test: part of java/java_test.go
Change-Id: If3b2777062daaa490a20c014e9b1bb4b1cb0a8df
Signed-off-by: Zoran Jovanovic <zoran.jovanovic@sony.com>

java/config/kotlin.go

@@ -15,7 +15,11 @@
 package config
 
 var (
-	KotlinStdlibJar = "external/kotlinc/lib/kotlin-stdlib.jar"
+	KotlinStdlibJar     = "external/kotlinc/lib/kotlin-stdlib.jar"
+	KotlincIllegalFlags = []string{
+		"-no-jdk",
+		"-no-stdlib",
+	}
 )
 
 func init() {