Merge tag 'kvm-riscv-fixes-6.10-1' of https://github.com/kvm-riscv/linux into HEAD

Merge tag 'kvm-riscv-fixes-6.10-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv fixes for 6.10, take #1

- No need to use mask when hart-index-bits is 0
- Fix incorrect reg_subtype labels in kvm_riscv_vcpu_set_reg_isa_ext()