iommu/amd: remove compiler warning due to IOMMU_CAP_NOEXEC

Some versions of GCC get unduly upset when confronted with a switch
that doesn't explicitly handle all cases of an enum, despite having an
implicit default case following the actualy switch statement:

   drivers/iommu/amd_iommu.c: In function 'amd_iommu_capable':
>> drivers/iommu/amd_iommu.c:3409:2: warning: enumeration value 'IOMMU_CAP_NOEXEC' not handled in switch [-Wswitch]
     switch (cap) {

This patch adds a case for IOMMU_CAP_NOEXEC to the amd IOMMU driver to
remove this warning.

Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 505a9adac2d5..3d78a8fb5a6a 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3411,6 +3411,8 @@ static bool amd_iommu_capable(enum iommu_cap cap)
                 return true;
         case IOMMU_CAP_INTR_REMAP:
                 return (irq_remapping_enabled == 1);
+        case IOMMU_CAP_NOEXEC:
+                return false;
         }
 
         return false;