Add str extension to extract_programmer_param function name

This patch changes the function name of extract_programmer_param() to
extract_programmer_param_str() as this function name will clearly
specify that it returns the value of the given parameter as a string.

Signed-off-by: Chinmay Lonkar <chinmay20220@gmail.com>
Change-Id: Id7b9fff4d3e1de22abd31b8123a1d237cd0f5c97
Reviewed-on: https://review.coreboot.org/c/flashrom/+/65521
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Thomas Heijligen <src@posteo.de>

flashrom.c

@@ -325,7 +325,7 @@ static char *extract_param(const char *const *haystack, const char *needle, cons
 	return opt;
 }
 
-char *extract_programmer_param(const char *param_name)
+char *extract_programmer_param_str(const char *param_name)
 {
 	return extract_param(&programmer_param, param_name, ",");
 }