[Backport] Added SBI v3.0 PMU enhancements in KVM and perf driver

[yechao-w]

功能描述
SBI v3.0 规范为 PMU 章节增加了两项新改进
1）新增了一个 get_event_info 函数，用于批量查询事件可用性，而无需为每个事件单独调用 SBI。这有助于缩短启动时间。
2）raw event 扩展到56 bits（raw event v2）

补丁集

• 依赖
  f0c9363 perf/riscv-sbi: Add platform specific firmware event handling
  16d3b1a perf: RISC-V: Check standard event availability
  c625154 drivers/perf: riscv: Align errno for unsupported perf event
  fc58db9 drivers/perf: riscv: Fix Platform firmware event data
  2c206cd drivers/perf: riscv: Return error for default case
  3aff4cd drivers/perf: riscv: Do not allow invalid raw event config

• Added SBI v3.0 PMU enhancements in KVM and perf driver
  8c8d0f0 drivers/perf: riscv: Add SBI v3.0 flag
  656ef2e drivers/perf: riscv: Add raw event v2 support
  190b741 RISC-V: KVM: Add support for Raw event v2
  adffbd0 drivers/perf: riscv: Implement PMU event info function
  880fcc3 drivers/perf: riscv: Export PMU event info function
  41f4d0c RISC-V: KVM: No need of explicit writable slot check
  e309fd1 RISC-V: KVM: Implement get event info function
  dbdadd9 RISC-V: KVM: Upgrade the supported SBI version to 3.0
  1c0180c RISC-V: KVM: Remove unnecessary 'ret' assignment （fix补丁）