Fix most compiler warnings in the boot and code segments (#674)

* Less warnings in boot & code segments

* few more warnings gone

* Ran formatter

* z_view warning gone

* -> 1

* f31 -> 31

* Remove function casts

* Few more small improvements

* Separate declaration and assignment in func_80091738 and Item_Give

Co-authored-by: Thar0 <maximilianc64@gmail.com>

src/libultra_code_O2/osContQuery.c

@@ -4,8 +4,7 @@
  * osContStartQuery:
  * Starts to read the values for SI device status and type which are connected to the controller port and joyport
  * connector.
- **/
-
+ */
 s32 osContStartQuery(OSMesgQueue* mq) {
     s32 ret;
     ret = 0;
@@ -25,7 +24,7 @@ s32 osContStartQuery(OSMesgQueue* mq) {
 /**
  * osContGetQuery:
  * Returns the values from osContStartQuery to status. Both functions must be paired for use.
- **/
+ */
 void osContGetQuery(OSContStatus* data) {
     u8 pattern;
     __osContGetInitData(&pattern, data);