scsi: message: fusion: Use dma_alloc_coherent() in mpt_alloc_fw_memory()

In [1], Christoph Hellwig has proposed to remove the wrappers in
include/linux/pci-dma-compat.h.

Some reasons why this API should be removed have been given by Julia Lawall
in [2].

mpt_alloc_fw_memory() should still use GFP_ATOMIC, because it can be called
from mpt_do_upload() which might sleep.

[1]: https://lore.kernel.org/kernel-janitors/[e-mail]/
[2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/

Link: https://lore.kernel.org/r/db3db9db21[e-mail]
Reviewed-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Christophe JAILLET <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/message/fusion/mptbase.c

···
 		rc = 0;
 		goto out;
 	}
-	ioc->cached_fw = pci_alloc_consistent(ioc->pcidev, size, &ioc->cached_fw_dma);
+	ioc->cached_fw = dma_alloc_coherent(&ioc->pcidev->dev, size,
+					    &ioc->cached_fw_dma, GFP_ATOMIC);
 	if (!ioc->cached_fw) {
 		printk(MYIOC_s_ERR_FMT "Unable to allocate memory for the cached firmware image!\n",
 		    ioc->name);