Merge "usb: host: xhci: Increase number of event ring segments to 4"

 * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,

 * meaning 64 ring segments.

 * Initial allocated size of the ERST, in number of entries */

#define	ERST_NUM_SEGS	1

#define	ERST_NUM_SEGS	4

/* Initial allocated size of the ERST, in number of entries */

#define	ERST_SIZE	64

/* Initial number of event segment rings allocated */