usb: musb: constify musb_hdrc_config structures

usb: musb: constify musb_hdrc_config structures

Declare musb_hdrc_config structures as const as they are only stored in
the config field of a musb_hdrc_platform_data structure. This field is of
type const, so musb_hdrc_config structures having this property can be
made const too.
Done using Coccinelle:

@r disable optional_qualifier@
identifier x;
position p;
@@
static struct musb_hdrc_config x@p={...};

@ok@
struct musb_hdrc_platform_data pdata;
identifier r.x;
position p;
@@
pdata.config=&x@p;

@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p

@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct musb_hdrc_config x;

File size before:
   text	   data	    bss	    dec	    hex	filename
   1212	    338	      0	   1550	    60e	drivers/usb/musb/jz4740.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   1268	    290	      0	   1558	    616	drivers/usb/musb/jz4740.o

File size before:
   text	   data	    bss	    dec	    hex	filename
   6151	    333	     16	   6500	   1964	drivers/usb/musb/sunxi.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   6215	    269	     16	   6500	   1964	drivers/usb/musb/sunxi.o

File size before:
   text	   data	    bss	    dec	    hex	filename
   3668	    864	      0	   4532	   11b4	drivers/usb/musb/ux500.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   3724	    808	      0	   4532	   11b4	drivers/usb/musb/ux500.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>