[PATCH 1/2 v2] IB/qib: don't use qib_wc_x86_64 for UML

[Randy Dunlap <rdunlap@infradead.org>]

When building qib_wc_x86_64.c on ARCH=um, references to some cpuinfo
fields cause build errors since cpuinfo does not contain x86-specific
fields.

Fix the build errors by making this driver depend on !UML.

Prevents these build errors:

../drivers/infiniband/hw/qib/qib_wc_x86_64.c: In function ‘qib_unordered_wc’:
../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:29: error: ‘struct cpuinfo_um’ has no member named ‘x86_vendor’
  149 |         return boot_cpu_data.x86_vendor != X86_VENDOR_AMD;
../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:44: error: ‘X86_VENDOR_AMD’ undeclared (first use in this function); did you mean ‘X86_VENDOR_ANY’?
  149 |         return boot_cpu_data.x86_vendor != X86_VENDOR_AMD;
../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:44: note: each undeclared identifier is reported only once for each function it appears in
../drivers/infiniband/hw/qib/qib_wc_x86_64.c:150:1: error: control reaches end of non-void function [-Werror=return-type]
  150 | }

Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: linux-rdma@vger.kernel.org
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-um@lists.infradead.org
---
v2: rebase & resend

 drivers/infiniband/hw/qib/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff -- a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
--- a/drivers/infiniband/hw/qib/Kconfig
+++ b/drivers/infiniband/hw/qib/Kconfig
@@ -3,6 +3,7 @@ config INFINIBAND_QIB
 	tristate "Intel PCIe HCA support"
 	depends on 64BIT && INFINIBAND_RDMAVT
 	depends on PCI
+	depends on !UML
 	help
 	This is a low-level driver for Intel PCIe QLE InfiniBand host
 	channel adapters.  This driver does not support the Intel