[newlib-cygwin] Catch up with 6edfd179c86: mechanically rename IFCAP_NOMAP to IFCAP_MEXTPG.

[Sebastian Huber <sh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=5bc5689a6aa4893b2076aace1b6d3b919f8e91ba

commit 5bc5689a6aa4893b2076aace1b6d3b919f8e91ba
Author: Gleb Smirnoff <glebius@FreeBSD.org>
Date:   Thu Jan 28 13:08:48 2021 -0800

    Catch up with 6edfd179c86: mechanically rename IFCAP_NOMAP to IFCAP_MEXTPG.
    
    Originally IFCAP_NOMAP meant that the mbuf has external storage pointer
    that points to unmapped address.  Then, this was extended to array of
    such pointers.  Then, such mbufs were augmented with header/trailer.
    Basically, extended mbufs are extended, and set of features is subject
    to change.  The new name should be generic enough to avoid further
    renaming.

Diff:
---
 newlib/libc/sys/rtems/include/net/if.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/newlib/libc/sys/rtems/include/net/if.h b/newlib/libc/sys/rtems/include/net/if.h
index 23d6cc756..a469a1f60 100644
--- a/newlib/libc/sys/rtems/include/net/if.h
+++ b/newlib/libc/sys/rtems/include/net/if.h
@@ -245,7 +245,7 @@ struct if_data {
 #define	IFCAP_HWSTATS		0x800000 /* manages counters internally */
 #define	IFCAP_TXRTLMT		0x1000000 /* hardware supports TX rate limiting */
 #define	IFCAP_HWRXTSTMP		0x2000000 /* hardware rx timestamping */
-#define	IFCAP_NOMAP		0x4000000 /* can TX unmapped mbufs */
+#define	IFCAP_MEXTPG		0x4000000 /* understands M_EXTPG mbufs */
 #define	IFCAP_TXTLS4		0x8000000 /* can do TLS encryption and segmentation for TCP */
 #define	IFCAP_TXTLS6		0x10000000 /* can do TLS encryption and segmentation for TCP6 */
 #define	IFCAP_VXLAN_HWCSUM	0x20000000 /* can do IFCAN_HWCSUM on VXLANs */