soc/intel/common: Fix 16-bit read/write PCI_COMMAND register

Change-Id: I09cc69a20dc67c0f48b35bfd2afeaba9e2ee5064
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40843
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/soc/intel/common/block/uart/uart.c b/src/soc/intel/common/block/uart/uart.c
index 7d75bdd..9498060 100644
--- a/src/soc/intel/common/block/uart/uart.c
+++ b/src/soc/intel/common/block/uart/uart.c
@@ -68,7 +68,7 @@
 	pci_write_config32(dev, PCI_BASE_ADDRESS_0, baseaddr);
 
 	/* Enable memory access and bus master */
-	pci_write_config32(dev, PCI_COMMAND, UART_PCI_ENABLE);
+	pci_write_config16(dev, PCI_COMMAND, UART_PCI_ENABLE);
 
 	uart_lpss_init(device, baseaddr);
 }
@@ -109,7 +109,7 @@
 	if (!base)
 		return false;
 
-	if ((pci_read_config32(dev, PCI_COMMAND) & UART_PCI_ENABLE)
+	if ((pci_read_config16(dev, PCI_COMMAND) & UART_PCI_ENABLE)
 	    != UART_PCI_ENABLE)
 		return false;