mm: Add NO_DMA dummies for DMA pool API
Add dummies for dma{,m}_pool_{create,destroy,alloc,free}(), to allow compile-testing if NO_DMA=y. This prevents the following from showing up later: ERROR: "dma_pool_destroy" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "dma_pool_free" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "dma_pool_alloc" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "dma_pool_create" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "dma_pool_destroy" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_free" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_alloc" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_create" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_alloc" [drivers/mailbox/bcm-pdc-mailbox.ko] undefined! ERROR: "dma_pool_free" [drivers/mailbox/bcm-pdc-mailbox.ko] undefined! ERROR: "dma_pool_create" [drivers/mailbox/bcm-pdc-mailbox.ko] undefined! ERROR: "d...
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ab642e95
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