[PATCH] riscv: fix RISCV_ISA_SVPBMT kconfig dependency warning

[Randy Dunlap]

RISCV_ISA_SVPBMT selects RISCV_ALTERNATIVE which depends on !XIP_KERNEL.
Therefore RISCV_ISA_SVPBMT should also depend on !XIP_KERNEL so
quieten this kconfig warning:

WARNING: unmet direct dependencies detected for RISCV_ALTERNATIVE
  Depends on [n]: !XIP_KERNEL [=y]
  Selected by [y]:
  - RISCV_ISA_SVPBMT [=y] && 64BIT [=y] && MMU [=y]

Fixes: ff689fd21cb1 ("riscv: add RISC-V Svpbmt extension support")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Wei Fu <wefu@xxxxxxxxxx>
Cc: Liu Shaohua <liush@xxxxxxxxxxxxxxxxx>
Cc: Guo Ren <guoren@xxxxxxxxxx>
Cc: Heiko Stuebner <heiko@xxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
---
 arch/riscv/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -362,6 +362,7 @@ config RISCV_ISA_C
 config RISCV_ISA_SVPBMT
 	bool "SVPBMT extension support"
 	depends on 64BIT && MMU
+	depends on !XIP_KERNEL
 	select RISCV_ALTERNATIVE
 	default y
 	help