IB/ipath: Remove dependency on PCI_MSI || HT_IRQ

Before IBA7220 support was added, the ipath driver didn't support any
hardware unless PCI_MSI and/or HT_IRQ was enabled.  However, the
IBA7220 can generate INTx interrupts, so it makes sense to allow the
driver to be build even if PCI_MSI=n and HT_IRQ=n.
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ipath/Kconfig

 config INFINIBAND_IPATH
 	tristate "QLogic InfiniPath Driver"
-	depends on (PCI_MSI || HT_IRQ) && 64BIT && NET
+	depends on 64BIT && NET
 	---help---
 	This is a driver for QLogic InfiniPath host channel adapters,
 	including InfiniBand verbs support.  This driver allows these