rp2/rp2_pio: Allow more than 8 consecutive pins for PIO out/set/sideset.

The bitmasks supplied for initialization of out/set/sideset were only 8 bit
instead of 32.  This resulted in an error, that not more than 8 consecutive
pins would get initialized.

Fixes issue #6933.

ports/rp2/rp2_pio.c

@@ -139,8 +139,8 @@ enum {
 typedef struct _asm_pio_config_t {
     int8_t base;
     uint8_t count;
-    uint8_t pindirs;
-    uint8_t pinvals;
+    uint32_t pindirs;
+    uint32_t pinvals;
 } asm_pio_config_t;
 
 STATIC void asm_pio_override_shiftctrl(mp_obj_t arg, uint32_t bits, uint32_t lsb, pio_sm_config *config) {