watchdog: w83627hf: make const array chip_name static

Don't populate array chip_name on the stack but instead make it static.
Makes the object code smaller by 40 bytes:

Before:
text data bss dec hex filename
5641 2840 384 8865 22a1 drivers/watchdog/w83627hf_wdt.o

After:
text data bss dec hex filename
5545 2896 384 8825 2279 drivers/watchdog/w83627hf_wdt.o

Signed-off-by: Colin Ian King <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/w83627hf_wdt.c

···
 {
 	int ret;
 	int chip;
-	const char * const chip_name[] = {
+	static const char * const chip_name[] = {
 		"W83627HF",
 		"W83627S",
 		"W83697HF",