eepro100: Allocate a larger buffer for regname()

This should avoid truncating the register name when debugging.
Signed-off-by: NDavid Benjamin <davidben@mit.edu>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/eepro100.c

@@ -648,7 +648,7 @@ static const char * const reg[PCI_IO_SIZE / 4] = {
 
 static char *regname(uint32_t addr)
 {
-    static char buf[16];
+    static char buf[32];
     if (addr < PCI_IO_SIZE) {
         const char *r = reg[addr / 4];
         if (r != 0) {