bossa: fix fpic compilation

Fixes: #17287 ("bossa: recompile with -fPIC")

Signed-off-by: Nick Hainke <vincent@systemli.org>

utils/bossa/Makefile

@@ -32,9 +32,13 @@ define Package/bossa/description
 endef
 
 define Build/Compile
-	COMMON_CXXFLAGS="$(TARGET_CFLAGS) $(EXTRA_CFLAGS) $(TARGET_CPPFLAGS) $(EXTRA_CPPFLAGS)" \
-	COMMON_LDFLAGS="$(TARGET_LINKFLAGS) $(TARGET_LDFLAGS)" \
-	$(MAKE) -C $(PKG_BUILD_DIR) $(TARGET_CONFIGURE_OPTS) CFLAGS="$(TARGET_CFLAGS)" bin/bossac
+	$(MAKE) -C $(PKG_BUILD_DIR) bin/bossac \
+    CC="$(TARGET_CC_NOCACHE)" \
+    CXX="$(TARGET_CXX_NOCACHE)" \
+    CFLAGS="$(TARGET_CFLAGS) $(EXTRA_CFLAGS)" \
+    CXXFLAGS="$(TARGET_CXXFLAGS) $(EXTRA_CXXFLAGS)" \
+    CPPFLAGS="$(TARGET_CPPFLAGS) $(EXTRA_CPPFLAGS)" \
+    LDFLAGS="$(TARGET_LDFLAGS) $(EXTRA_LDFLAGS)"
 endef
 
 define Package/bossa/install