tests/Makefile.include: test all rounding modes of softfloat

We missed a bug in a recent patch as we were not testing all the
rounding modes for all operations. However enabling all rounding modes
for mulAdd does slow down the already slowest test and doesn't really
buy us much additional coverage so lets allow the default test flags
to be overridden.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

tests/Makefile.include

@@ -898,12 +898,12 @@ $(FP_TEST_BIN):
 # The full test suite can take a bit of time, default to a quick run
 # "-l 2 -r all" can take more than a day for some operations and is best
 # run manually
-FP_TL=-l 1
+FP_TL=-l 1 -r all
 
-# $1 = tests, $2 = description
+# $1 = tests, $2 = description, $3 = test flags
 test-softfloat = $(call quiet-command, \
 			cd $(BUILD_DIR)/tests/fp && \
-			./fp-test -s $(FP_TL) $1 > $2.out 2>&1 || \
+			./fp-test -s $(if $3,$3,$(FP_TL)) $1 > $2.out 2>&1 || \
 			(cat $2.out && exit 1;), \
 			"FLOAT TEST", $2)
 
@@ -984,7 +984,7 @@ check-softfloat-compare: $(SF_COMPARE_RULES)
 check-softfloat-mulAdd: $(FP_TEST_BIN)
 	$(call test-softfloat, \
 		f16_mulAdd f32_mulAdd f64_mulAdd f128_mulAdd, \
-		mulAdd)
+		mulAdd,-l 1)
 
 # FIXME: extF80_rem (broken)
 check-softfloat-rem: $(FP_TEST_BIN)