libpayload: Provide atol(), malloc.h

Change-Id: I807ca061115146a6851eef481eb881b279fba8e1
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/86
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

payloads/libpayload/include/malloc.h

@@ -0,0 +1 @@
+#include <stdlib.h>

payloads/libpayload/include/stdlib.h

@@ -120,6 +120,7 @@ void *memalign(size_t align, size_t size);
  */
 long int strtol(const char *s, char **nptr, int base);
 unsigned long int strtoul(const char *s, char **nptr, int base);
+long atol(const char *nptr);
 
 /** @} */
 

payloads/libpayload/libc/string.c

@@ -473,6 +473,11 @@ long int strtol(const char *ptr, char **endptr, int base)
         return ret * negative;
 }
 
+long atol(const char *nptr)
+{
+	return strtol(nptr, NULL, 10);
+}
+
 /**
  * Convert the initial portion of a string into an unsigned int
  * @param ptr A pointer to the string to convert