cap: Skip compiling SetGuestDebug for RISC-V at the moment

RISC-V currently doesn't support KVM_CAP_SET_GUEST_DEBUG.

Signed-off-by: Tan En De <ende.tan@starfivetech.com>

Author: endeneer

src/cap.rs

@@ -41,6 +41,13 @@ pub enum Cap {
     Iommu = KVM_CAP_IOMMU,
     DestroyMemoryRegionWorks = KVM_CAP_DESTROY_MEMORY_REGION_WORKS,
     UserNmi = KVM_CAP_USER_NMI,
+    #[cfg(any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+        target_arch = "arm",
+        target_arch = "aarch64",
+        target_arch = "s390"
+    ))]
     SetGuestDebug = KVM_CAP_SET_GUEST_DEBUG,
     #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
     ReinjectControl = KVM_CAP_REINJECT_CONTROL,