vt: Support \e[90-97m (bright foreground colors).

These codes are supported by all major terminals, thus they occasionally see
some use despite being redundant with \e[38;5;(x+8)m or (less exactly)
\e[1;3(x)m.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/vt/vt.c

@@ -1415,6 +1415,10 @@ static void csi_m(struct vc_data *vc)
 				(vc->vc_color & 0x0f);
 			break;
 		default:
+			if (vc->vc_par[i] >= 90 && vc->vc_par[i] <= 97) {
+				vc->vc_intensity = 2;
+				vc->vc_par[i] -= 60;
+			}
 			if (vc->vc_par[i] >= 30 && vc->vc_par[i] <= 37)
 				vc->vc_color = color_table[vc->vc_par[i] - 30]
 					| (vc->vc_color & 0xf0);