nshlib/nsh_console.h:  Fix copy paste errors. Some Kconfig configuration names needed CONFIG_ prefix.
#if CONFIG_NFILE_STREAMS > 0
# ifdef CONFIG_NSH_ALTCONDEV
-# if !defined(CONFIG_NSH_ALTSTDIN) && !defined(NSH_ALTSTDOUT) && \
- !defined(CONFIGNSH_ALTSTDERR)
+# if !defined(CONFIG_NSH_ALTSTDIN) && !defined(CONFIG_NSH_ALTSTDOUT) && \
+ !defined(CONFIG_NSH_ALTSTDERR)
# error CONFIG_NSH_ALTCONDEV selected but CONFIG_NSH_ALTSTDxxx not provided
# endif
