SQUASHME pkg/oonf_api: Update build to use ld -r for submodules

Do not make 'oonf_api' group all oonf_* objects.

I find it strange to merge modules there.

makefiles/pseudomodules.inc.mk

@@ -140,8 +140,4 @@ PSEUDOMODULES += crypto_aes_precalculated
 # This pseudomodule causes a loop in AES to be unrolled (more flash, less CPU)
 PSEUDOMODULES += crypto_aes_unroll
 
-# declare oonf submodules as pseudomodules, but exclude oonf_api
-PSEUDOMODULES += oonf_%
-NO_PSEUDOMODULES += oonf_api
-
 # Packages may also add modules to PSEUDOMODULES in their `Makefile.include`.

pkg/oonf_api/patches/0001-add-RIOT-support.patch

@@ -26,7 +26,7 @@ new file mode 100644
 index 0000000..1f1cd9c
 --- /dev/null
 +++ b/Makefile
-@@ -0,0 +1,28 @@
+@@ -0,0 +1,24 @@
 +#
 +# to use oonf_api in your RIOT project,
 +# add the following to your Makefile:
@@ -51,10 +51,6 @@ index 0000000..1f1cd9c
 +	DIRS += external/regex
 +endif
 +include $(RIOTBASE)/Makefile.base
-+# Build static archive from the submodule objects
-+all: $(BINDIR)/$(MODULE).a
-+$(patsubst %,$(BINDIR)/%.o,$(filter oonf_%,$(USEMODULE))): | ${DIRS:%=ALL--%}
-+$(BINDIR)/$(MODULE).a: $(patsubst %,$(BINDIR)/%.o,$(filter oonf_%,$(USEMODULE))) | ${DIRS:%=ALL--%}
 diff --git a/external/regex/Makefile b/external/regex/Makefile
 new file mode 100644
 index 0000000..3bc1ce1