hv: change error code of undefined hypercall

This patch adds ENOTTY and ENOSYS to indicate undefined and obsoleted
request hyercall respectively, and uses ENOTTY as error code for undefined
hypercall instead of EINVAL to consistent with the ACRN kernel's return
value.

Tracked-On: #7029
Signed-off-by: Wen Qian <qian.wen@intel.com>
Signed-off-by: Li Fei <fei1.li@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>

hypervisor/include/lib/errno.h

@@ -23,6 +23,10 @@
 #define ENODEV		19
 /** Indicates that argument is not valid. */
 #define EINVAL		22
+/** Indicates the operation is undefined. */
+#define ENOTTY		25
+/** Indicates the operation is obsoleted. */
+#define ENOSYS		38
 /** Indicates that timeout occurs. */
 #define ETIMEDOUT	110