clean components/ whitespace issues

image_conf, make_scripts_riscv -  Delete trailing spaces. Change tabs to 4 space multiples.

    .c and .h get tabs expanded to four spaces for consistency, traliing whitespace whacked.
    Makefiles do NOT get tabs changed.

components/network/lwip/doc/doxygen/main_page.h

@@ -168,7 +168,7 @@
  * TCPIP thread. It is a common error to call these from other threads
  * or from IRQ contexts. ​Ethernet RX needs to deliver incoming packets
  * in the correct way by sending a message to TCPIP thread, this is
- * implemented in tcpip_input().​​
+ * implemented in tcpip_input().
  * Again, ensure lwIP is _NEVER_ called from an interrupt, e.g.
  * some SPI IRQ wants to forward data to udp_send() or tcp_write()!
  *