uclibc: fix coreutils cut bug, enable needed config symbols in uclibc-ng config

Fixes https://bugs.buildroot.org/show_bug.cgi?id=4099

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uclibc/uClibc-ng.config

@@ -24,8 +24,8 @@ UCLIBC_HAS_LIBNSL_STUB=y
 UCLIBC_HAS_CTYPE_CHECKED=y
 UCLIBC_HAS_HEXADECIMAL_FLOATS=y
 UCLIBC_HAS_GLIBC_CUSTOM_PRINTF=y
-# UCLIBC_HAS_STDIO_GETC_MACRO is not set
-# UCLIBC_HAS_STDIO_PUTC_MACRO is not set
+UCLIBC_HAS_STDIO_GETC_MACRO=y
+UCLIBC_HAS_STDIO_PUTC_MACRO=y
 UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE=y
 UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y
 UCLIBC_HAS_PRINTF_M_SPEC=y