x86: Add iommu_init to x86_init_ops, fix build
x86: Add iommu_init to x86_init_ops, fix build

Most of the time x86_init.h is included in pci-dma.c - but not always,
leading to this rare build failure:

arch/x86/kernel/pci-dma.c:296: error: 'x86_init' undeclared (first use in this function)

So include asm/x86_init.h explicitly.

Cc: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>
Cc: e829bd48de90b6e1a1950750fa8ca2bb62f273d4@sous-sol.org
Cc: 97b3379caa91f4ee97e44013ae4dc6350540fa9d@infradead.org
Cc: ebd221a096cbc71dd9e1991db28795933c85f380@amd.com
Cc: 39a23f13907d8d96d92c9e39130dfd3cad42f06a@il.ibm.com
LKML-Reference: <1257849980-22640-2-git-send-email-93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@elte.hu>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas