tools: PCI: Add sample test script to invoke pcitest

Add a simple test script that invokes the pcitest userspace tool to perform
all the PCI endpoint tests (BAR tests, interrupt tests, read tests, write
tests and copy tests).
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

tools/pci/pcitest.sh

+#!/bin/sh
+
+echo "BAR tests"
+echo
+
+bar=0
+
+while [ $bar -lt 6 ]
+do
+	pcitest -b $bar
+	bar=`expr $bar + 1`
+done
+echo
+
+echo "Interrupt tests"
+echo
+
+pcitest -l
+msi=1
+
+while [ $msi -lt 33 ]
+do
+        pcitest -m $msi
+        msi=`expr $msi + 1`
+done
+echo
+
+echo "Read Tests"
+echo
+
+pcitest -r -s 1
+pcitest -r -s 1024
+pcitest -r -s 1025
+pcitest -r -s 1024000
+pcitest -r -s 1024001
+echo
+
+echo "Write Tests"
+echo
+
+pcitest -w -s 1
+pcitest -w -s 1024
+pcitest -w -s 1025
+pcitest -w -s 1024000
+pcitest -w -s 1024001
+echo
+
+echo "Copy Tests"
+echo
+
+pcitest -c -s 1
+pcitest -c -s 1024
+pcitest -c -s 1025
+pcitest -c -s 1024000
+pcitest -c -s 1024001
+echo