[PATCH] hw/riscv: fix build error with clang

[Pierrick Bouvier]

Introduced in 0c54ac, "hw/riscv: add RISC-V IOMMU base emulation"

../hw/riscv/riscv-iommu.c:187:17: error: redefinition of '_pext_u64'

  187 | static uint64_t _pext_u64(uint64_t val, uint64_t ext)

      |                 ^

D:/a/_temp/msys64/clang64/lib/clang/18/include/bmi2intrin.h:217:1: note: 
previous definition is here

  217 | _pext_u64(unsigned long long __X, unsigned long long __Y)

      | ^

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
---
 hw/riscv/riscv-iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/riscv/riscv-iommu.c b/hw/riscv/riscv-iommu.c
index feb650549ac..f738570bac2 100644
--- a/hw/riscv/riscv-iommu.c
+++ b/hw/riscv/riscv-iommu.c
@@ -184,7 +184,7 @@ static void riscv_iommu_pri(RISCVIOMMUState *s,
 }
 
 /* Portable implementation of pext_u64, bit-mask extraction. */
-static uint64_t _pext_u64(uint64_t val, uint64_t ext)
+static uint64_t pext_u64(uint64_t val, uint64_t ext)
 {
     uint64_t ret = 0;
     uint64_t rot = 1;
@@ -528,7 +528,7 @@ static MemTxResult riscv_iommu_msi_write(RISCVIOMMUState *s,
     int cause;
 
     /* Interrupt File Number */
-    intn = _pext_u64(PPN_DOWN(gpa), ctx->msi_addr_mask);
+    intn = pext_u64(PPN_DOWN(gpa), ctx->msi_addr_mask);
     if (intn >= 256) {
         /* Interrupt file number out of range */
         res = MEMTX_ACCESS_ERROR;
-- 
2.39.5