uclibc++: make verbosity affect uClibc++ build

Before this change, setting the verbosity to anything with V=blah would
cause uclibc++ build to print errors to the screen. Now, it the
clibc++ build verbosity will be altered in the following manners:
* V=s will set V=1 in the uclibc++ build
* V=sc will set V=2 in the uclibc++ build

Signed-off-by: Wren Turkal <wt@penguintechs.org>

package/libs/uclibc++/Makefile

@@ -55,6 +55,14 @@ ifeq ($(CONFIG_USE_MUSL),y)
 SSP_LIB=-lssp_nonshared
 endif
 
+ifeq (${V}, s)
+MAKE_VARS+= \
+	V=1
+else ifeq (${V}, sc)
+MAKE_VARS+= \
+	V=2
+endif
+
 MAKE_FLAGS:= \
 	$(TARGET_CONFIGURE_OPTS) \
 	CPU_CFLAGS="$(TARGET_CFLAGS)" \