iommu: Move iommu Kconfig entries to submenu

For better navigation this patch moves the drivers/iommu
drivers into its own submenu in Kconfig.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e2a5f141ae2d..b57b3fa492f3 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -2,6 +2,17 @@
 config IOMMU_API
         bool
 
+menuconfig IOMMU_SUPPORT
+        bool "IOMMU Hardware Support"
+        default y
+        ---help---
+          Say Y here if you want to compile device drivers for IO Memory
+          Management Units into the kernel. These devices usually allow to
+          remap DMA requests and/or remap interrupts from other devices on the
+          system.
+
+if IOMMU_SUPPORT
+
 # MSM IOMMU support
 config MSM_IOMMU
         bool "MSM IOMMU Support"
@@ -95,3 +106,5 @@ config INTR_REMAP
           Supports Interrupt remapping for IO-APIC and MSI devices.
           To use x2apic mode in the CPU's which support x2APIC enhancements or
           to support platforms with CPU's having > 8 bit APIC ID, say Y.
+
+endif # IOMMU_SUPPORT