proftpd: needs mmu

---
Fix below build error:

src/main.o: In function `fork_server':
main.c:(.text+0x26fc): undefined reference to fork' src/main.o: In function main':
main.c:(.text+0x39bc): undefined reference to `fork'
collect2: ld returned 1 exit status
make[1]: *** [proftpd] Error 1

 package/proftpd/Config.in | 1 +
 1 file changed, 1 insertion(+)

index 7793713..18407d1 100644
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_PROFTPD
 	bool "proftpd"
+	depends on BR2_USE_MMU # fork()
 	help
 	  ProFTPD, a highly configurable FTP server.
 

1.8.1.2

Axel> Signed-off-by: Axel Lin <[email protected]>

Committed, thanks.

Bye, Peter Korsgaard