drivers: dgap: Include appropriate header file in dgap_parse.c

Include appropriate header file in dgap/dgap_parse.h in dgap_parse.c
because functions dgap_parsefile(), dgap_config_get_useintr(),
dgap_config_get_altpin(), dgap_find_config(),
dgap_config_get_number_of_ports(), dgap_create_config_string() and
dgap_get_config_letters() have their prototype declarations in the
header file.

This eliminates the following warnings in dgap_parse.c:
drivers/staging/dgap/dgap_parse.c:125:5: warning: no previous prototype for ‘dgap_parsefile’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1101:6: warning: no previous prototype for ‘dgap_config_get_useintr’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1128:6: warning: no previous prototype for ‘dgap_config_get_altpin’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1157:15: warning: no previous prototype for ‘dgap_find_config’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1223:6: warning: no previous prototype for ‘dgap_config_get_number_of_ports’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1252:7: warning: no previous prototype for ‘dgap_create_config_string’ [-Wmissing-prototypes]
drivers/staging/dgap/dgap_parse.c:1311:7: warning: no previous prototype for ‘dgap_get_config_letters’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/dgap/dgap_parse.c

···
 #include "dgap_types.h"
 #include "dgap_fep5.h"
 #include "dgap_driver.h"
+#include "dgap_parse.h"
 #include "dgap_conf.h"