payloads: Fix typos

Change-Id: Ib7f1ba1766e5c972542ce7571a8aa3583c513823
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38911
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

payloads/libpayload/libc/args.c

@@ -52,7 +52,7 @@ int string_argc;
  *
  * @param caller to be used as argv[0] (may be NULL to ignore)
  * @param string to process
- * @return 0 if no error occured.
+ * @return 0 if no error occurred.
  */
 int string_to_args(char *caller, char *string)
 {
@@ -66,7 +66,7 @@ int string_to_args(char *caller, char *string)
 
 	/* Terminate if the string ends */
 	while (string && *string) {
-		/* whitespace occured? */
+		/* whitespace occurred? */
 		if ((*string == ' ') || (*string == '\t')) {
 			/* skip all whitespace (and null it) */
 			while (*string == ' ' || *string == '\t')

payloads/libpayload/libc/malloc.c

@@ -318,7 +318,7 @@ void *realloc(void *ptr, size_t size)
 
 struct align_region_t
 {
-	/* If alignment is 0 then the region reqpresents a large region which
+	/* If alignment is 0 then the region represents a large region which
 	 * has no metadata for tracking subelements. */
 	int alignment;
 	/* start in memory, and size in bytes */

payloads/libpayload/libc/readline.c

@@ -129,7 +129,7 @@ char *readline(const char *prompt)
 			if (ch < 0x20)
 				break;
 
-			/* ignore unprintables */
+			/* ignore unprintable characters */
 			if (ch >= 0x7f)
 				break;
 

payloads/libpayload/libc/string.c

@@ -268,7 +268,7 @@ size_t strlcat(char *d, const char *s, size_t n)
  *
  * @param s The string.
  * @param c The character.
- * @return A pointer to the first occurence of the character in the
+ * @return A pointer to the first occurrence of the character in the
  * string, or NULL if the character was not encountered within the string.
  */
 char *strchr(const char *s, int c)
@@ -288,7 +288,7 @@ char *strchr(const char *s, int c)
  *
  * @param s The string.
  * @param c The character.
- * @return A pointer to the last occurence of the character in the
+ * @return A pointer to the last occurrence of the character in the
  * string, or NULL if the character was not encountered within the string.
  */
 
@@ -327,7 +327,7 @@ char *strdup(const char *s)
  *
  * @param h The haystack string.
  * @param n The needle string (substring).
- * @return A pointer to the first occurence of the substring in
+ * @return A pointer to the first occurrence of the substring in
  * the string, or NULL if the substring was not encountered within the string.
  */
 char *strstr(const char *h, const char *n)