board: ecovec: fix USB0 clock enable

Enable USB0 clock by resetting bit 20 of MSTPCR2. Leave other bits unchanged.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/ecovec/ecovec.c

@@ -97,7 +97,7 @@ int board_init(void)
 	/* USB host */
 	outw((inw(PBCR) & ~0x300) | 0x100, PBCR);
 	outb((inb(PBDR) & ~0x10) | 0x10, PBDR);
-	outl(inl(MSTPCR2) & 0x100000, MSTPCR2);
+	outl(inl(MSTPCR2) & ~0x100000, MSTPCR2);
 	outw(0x0600, UPONCR0);
 
 	debug_led(1 << 3);