[PATCH] iommu/arm-smmu-v3: add missing header

[Robert Marko]

str_read_write is currently undeclared and thus compilation will fail with:
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:1911:25: error: implicit declaration of function ‘str_read_write’; did you mean ‘sb_end_write’? [-Wimplicit-function-declaration]

So include the missing linux/string_choices.h header to fix compilation.

Fixes: f2c77f6e41e6 ("iommu/arm-smmu-v3: Use str_read_write helper w/ logs")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202501111926.qOpnlK9J-lkp@xxxxxxxxx/
Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 0e4cbb2c64d7..a0e395da8a88 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -26,6 +26,7 @@
 #include <linux/pci.h>
 #include <linux/pci-ats.h>
 #include <linux/platform_device.h>
+#include <linux/string_choices.h>
 #include <kunit/visibility.h>
 #include <uapi/linux/iommufd.h>
 
-- 
2.47.1