PCI: Add 32 GT/s decoding in some macros

Link speed 32.0 GT/s is supported in PCIe r5.0. Add this speed to
PCIE_SPEED2STR() and PCIE_SPEED2MBS_ENC() to correctly decode it.

This is complementary to de76cda2 ("PCI: Decode PCIe 32 GT/s link
speed").

Link: https://lore.kernel.org/r/1581937984-40353-2-git-send-email-yangyicong@hisilicon.comSigned-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/pci.h

@@ -294,7 +294,8 @@ void pci_bus_put(struct pci_bus *bus);
 
 /* PCIe link information */
 #define PCIE_SPEED2STR(speed) \
-	((speed) == PCIE_SPEED_16_0GT ? "16 GT/s" : \
+	((speed) == PCIE_SPEED_32_0GT ? "32 GT/s" : \
+	 (speed) == PCIE_SPEED_16_0GT ? "16 GT/s" : \
 	 (speed) == PCIE_SPEED_8_0GT ? "8 GT/s" : \
 	 (speed) == PCIE_SPEED_5_0GT ? "5 GT/s" : \
 	 (speed) == PCIE_SPEED_2_5GT ? "2.5 GT/s" : \
@@ -302,7 +303,8 @@ void pci_bus_put(struct pci_bus *bus);
 
 /* PCIe speed to Mb/s reduced by encoding overhead */
 #define PCIE_SPEED2MBS_ENC(speed) \
-	((speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
+	((speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
+	 (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
 	 (speed) == PCIE_SPEED_8_0GT  ?  8000*128/130 : \
 	 (speed) == PCIE_SPEED_5_0GT  ?  5000*8/10 : \
 	 (speed) == PCIE_SPEED_2_5GT  ?  2500*8/10 : \