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iommu/iova: move IOVA_MAX_GLOBAL_MAGS outside of IOMMU_SUPPORT
hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7I3P1 CVE: NA -------------------------------------------- The commit 0227a749 introduce a config CONFIG_IOVA_MAX_GLOBAL_MAGS, but it relies on IOMMU_SUPPORT. Some drivers can compile without IOMMU_SUPPORT, but still include include/linux/iova.h, which can cause compile problem. Fix this by moving the definition of CONFIG_IOVA_MAX_GLOBAL_MAGS out of IOMMU_SUPPORT. The error compile message is showned as below: In file included from ./include/linux/intel-iommu.h:14, from ./include/drm/intel-gtt.h:8, from drivers/char/agp/intel-agp.c:15: ./include/linux/iova.h:29:25: error: ‘CONFIG_IOVA_MAX_GLOBAL_MAGS’ undeclared here (not in a function) 29 | #define MAX_GLOBAL_MAGS CONFIG_IOVA_MAX_GLOBAL_MAGS /* magazines per bin */ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/iova.h:34:30: note: in expansion of macro ‘MAX_GLOBAL_MAGS’ 34 | struct iova_magazine *depot[MAX_GLOBAL_MAGS]; | ^~~~~~~~~~~~~~~ In file included from ./include/linux/intel-iommu.h:14, from ./include/drm/intel-gtt.h:8, from drivers/char/agp/intel-gtt.c:27: ./include/linux/iova.h:29:25: error: ‘CONFIG_IOVA_MAX_GLOBAL_MAGS’ undeclared here (not in a function) 29 | #define MAX_GLOBAL_MAGS CONFIG_IOVA_MAX_GLOBAL_MAGS /* magazines per bin */ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/iova.h:34:30: note: in expansion of macro ‘MAX_GLOBAL_MAGS’ 34 | struct iova_magazine *depot[MAX_GLOBAL_MAGS]; | ^~~~~~~~~~~~~~~ make[3]: *** [scripts/Makefile.build:286: drivers/char/agp/intel-agp.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[3]: *** [scripts/Makefile.build:286: drivers/char/agp/intel-gtt.o] Error 1 make[2]: *** [scripts/Makefile.build:503: drivers/char/agp] Error 2 make[1]: *** [scripts/Makefile.build:503: drivers/char] Error 2 make[1]: *** Waiting for unfinished jobs.... Signed-off-by:Zhang Zekun <zhangzekun11@huawei.com>