Change "class" parameter name to "devclass" to avoid C++ issues

In C++ "class" is a reserved keyword, and as we'll want to use libflashrom
from C++ code at some point, let's make sure it doesn't cause issues.
Other places in the code already used "devclass" anyway, so it also increases
consistency and readability a bit.

Corresponding to flashrom svn r1371.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/internal.c b/internal.c
index 32bfb3a..c59209e 100644
--- a/internal.c
+++ b/internal.c
@@ -35,7 +35,7 @@
 	return NULL;
 }
 
-struct pci_dev *pci_dev_find_vendorclass(uint16_t vendor, uint16_t class)
+struct pci_dev *pci_dev_find_vendorclass(uint16_t vendor, uint16_t devclass)
 {
 	struct pci_dev *temp;
 	struct pci_filter filter;
@@ -48,7 +48,7 @@
 		if (pci_filter_match(&filter, temp)) {
 			/* Read PCI class */
 			tmp2 = pci_read_word(temp, 0x0a);
-			if (tmp2 == class)
+			if (tmp2 == devclass)
 				return temp;
 		}