Implement HlClearApicErrors() and HlSendEoi() routines, change HlDisableLegacyPic() calling convention

xtoskrnl/includes/amd64/hli.h

@@ -13,14 +13,22 @@
 
 
 /* HAL library routines forward references */
-XTCDECL
+XTAPI
 VOID
-HlDisablePic(VOID);
+HlClearApicErrors();
+
+XTAPI
+VOID
+HlDisableLegacyPic();
 
 XTFASTCALL
 ULONG
 HlReadApicRegister(IN APIC_REGISTER Register);
 
+XTAPI
+VOID
+HlSendEoi();
+
 XTFASTCALL
 VOID
 HlWriteApicRegister(IN APIC_REGISTER Register,