samd/mcu: Enable the math module on SAMD51.

ports/samd/mcu/samd51/mpconfigmcu.h

@@ -9,7 +9,8 @@
 
 #define MICROPY_FLOAT_IMPL              (MICROPY_FLOAT_IMPL_FLOAT)
 #define MICROPY_PY_BUILTINS_COMPLEX     (0)
-#define MICROPY_PY_MATH                 (0)
+#define MICROPY_PY_MATH                 (1)
+#define MP_NEED_LOG2                    (1)
 #define MICROPY_PY_CMATH                (0)
 
 #define MICROPY_PY_UOS_URANDOM          (1)

ports/samd/mcu/samd51/mpconfigmcu.mk

@@ -1 +1,30 @@
 SRC_S += shared/runtime/gchelper_m3.s
+
+SRC_MOD +=  $(addprefix lib/libm/,\
+	acoshf.c \
+	asinfacosf.c \
+	asinhf.c \
+	atan2f.c \
+	atanf.c \
+	atanhf.c \
+	ef_rem_pio2.c \
+	erf_lgamma.c \
+	fmodf.c \
+	kf_cos.c \
+	kf_rem_pio2.c \
+	kf_sin.c \
+	kf_tan.c \
+	log1pf.c \
+	math.c \
+	nearbyintf.c \
+	roundf.c \
+	sf_cos.c \
+	sf_erf.c \
+	sf_frexp.c \
+	sf_ldexp.c \
+	sf_modf.c \
+	sf_sin.c \
+	sf_tan.c \
+	wf_lgamma.c \
+	wf_tgamma.c \
+	)