RISC-V CPU Idle Support

This series adds RISC-V CPU Idle support using SBI HSM suspend function.
The RISC-V SBI CPU idle driver added by this series is highly inspired
from the ARM PSCI CPU idle driver.

Special thanks Sandeep Tripathy for providing early feeback on SBI HSM
support in all above projects (RISC-V SBI specification, OpenSBI, and
Linux RISC-V).

* palmer/riscv-idle:
  RISC-V: Enable RISC-V SBI CPU Idle driver for QEMU virt machine
  dt-bindings: Add common bindings for ARM and RISC-V idle states
  cpuidle: Add RISC-V SBI CPU idle driver
  cpuidle: Factor-out power domain related code from PSCI domain driver
  RISC-V: Add SBI HSM suspend related defines
  RISC-V: Add arch functions for non-retentive suspend entry/exit
  RISC-V: Rename relocate() and make it global
  RISC-V: Enable CPU_IDLE drivers

diff --cc MAINTAINERS
Simple merge

diff --cc arch/riscv/Kconfig
Simple merge

diff --cc arch/riscv/Kconfig.socs
Simple merge

diff --cc arch/riscv/configs/defconfig
Simple merge

diff --cc arch/riscv/configs/rv32_defconfig
Simple merge

diff --cc arch/riscv/include/asm/asm.h
index 618d7c5,48b4baa..8c2549b
--- 1/arch/riscv/include/asm/asm.h
--- 2/arch/riscv/include/asm/asm.h
+++ b/arch/riscv/include/asm/asm.h
@@@ -67,4 -67,31 +67,30 @@@
  #error "Unexpected __SIZEOF_SHORT__"
  #endif
  
 -      li t0, XIP_OFFSET_MASK
 -      and t1, t1, t0
 -      li t1, XIP_OFFSET
 -      sub t0, t0, t1
 -      sub \reg, \reg, t0
+ #ifdef __ASSEMBLY__
+ 
+ /* Common assembly source macros */
+ 
+ #ifdef CONFIG_XIP_KERNEL
+ .macro XIP_FIXUP_OFFSET reg
+       REG_L t0, _xip_fixup
+       add \reg, \reg, t0
+ .endm
+ .macro XIP_FIXUP_FLASH_OFFSET reg
+       la t1, __data_loc
++      REG_L t1, _xip_phys_offset
++      sub \reg, \reg, t1
++      add \reg, \reg, t0
+ .endm
+ _xip_fixup: .dword CONFIG_PHYS_RAM_BASE - CONFIG_XIP_PHYS_ADDR - XIP_OFFSET
++_xip_phys_offset: .dword CONFIG_XIP_PHYS_ADDR + XIP_OFFSET
+ #else
+ .macro XIP_FIXUP_OFFSET reg
+ .endm
+ .macro XIP_FIXUP_FLASH_OFFSET reg
+ .endm
+ #endif /* CONFIG_XIP_KERNEL */
+ 
+ #endif /* __ASSEMBLY__ */
+ 
  #endif /* _ASM_RISCV_ASM_H */

diff --cc arch/riscv/kernel/Makefile
Simple merge