!484 feature: iccarm适配新增网络相关接口

Merge pull request !484 from Zhaotianyu/20220825iccarm_net

porting/liteos_m_iccarm/kernel/iccarm.gni

@@ -34,4 +34,8 @@ ICCARM_ADAPT_SRC_COMMON = [
   "$MUSLPORTINGDIR/src/malloc.c",
   "$MUSLPORTINGDIR/src/fs.c",
   "$MUSLPORTINGDIR/src/misc/realpath.c",
+  "$MUSLPORTINGDIR/src/network/htonl.c",
+  "$MUSLPORTINGDIR/src/network/htons.c",
+  "$MUSLPORTINGDIR/src/network/ntohl.c",
+  "$MUSLPORTINGDIR/src/network/ntohs.c",
 ]

porting/liteos_m_iccarm/kernel/src/network/htonl.c

+#include <netinet/in.h>
+#include <byteswap.h>
+
+uint32_t htonl(uint32_t n)
+{
+	union { int i; char c; } u = { 1 };
+	return u.c ? bswap_32(n) : n;
+}

porting/liteos_m_iccarm/kernel/src/network/htons.c

+#include <netinet/in.h>
+#include <byteswap.h>
+
+uint16_t htons(uint16_t n)
+{
+	union { int i; char c; } u = { 1 };
+	return u.c ? bswap_16(n) : n;
+}

porting/liteos_m_iccarm/kernel/src/network/ntohl.c

+#include <netinet/in.h>
+#include <byteswap.h>
+
+uint32_t ntohl(uint32_t n)
+{
+	union { int i; char c; } u = { 1 };
+	return u.c ? bswap_32(n) : n;
+}

porting/liteos_m_iccarm/kernel/src/network/ntohs.c

+#include <netinet/in.h>
+#include <byteswap.h>
+
+uint16_t ntohs(uint16_t n)
+{
+	union { int i; char c; } u = { 1 };
+	return u.c ? bswap_16(n) : n;
+}