IB/qib: fix spelling mistake "colescing" -> "coalescing"

There is a spelling mistake in the module description text, fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/qib/qib_pcie.c

@@ -387,7 +387,7 @@ void qib_pcie_reenable(struct qib_devdata *dd, u16 cmd, u8 iline, u8 cline)
 
 static int qib_pcie_coalesce;
 module_param_named(pcie_coalesce, qib_pcie_coalesce, int, S_IRUGO);
-MODULE_PARM_DESC(pcie_coalesce, "tune PCIe colescing on some Intel chipsets");
+MODULE_PARM_DESC(pcie_coalesce, "tune PCIe coalescing on some Intel chipsets");
 
 /*
  * Enable PCIe completion and data coalescing, on Intel 5x00 and 7300