This adds some missing IOMMU related options for x86/64 and moves some
of them to generic for all targets.
On x86 IOMMU_DEFAULT_DMA_LAZY is used by default, on all other platforms
IOMMU_DEFAULT_DMA_STRICT is the default. we just follow the default
kernel configuration here.
Fixes: 8fea4a102c ("x86/64: enable IOMMU support")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
- refresh config
- disable suspend as it's pointless in the sope of OpenWrt
- enable CPU frequency scaling
Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>