tools: update patch to v2.7.6

Removes a redundant patch with a fix already upstream.  Build tested on
apm821xx (PPC).

Signed-off-by: Russell Senior <russell@personaltelco.net>

tools/patch/Makefile

@@ -7,11 +7,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=patch
-PKG_VERSION:=2.7.5
+PKG_VERSION:=2.7.6
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/patch
-PKG_HASH:=fd95153655d6b95567e623843a0e77b81612d502ecf78a489a4aed7867caa299
+PKG_HASH:=ac610bda97abe0d9f6b7c963255a11dcb196c25e337c61f94e4778d632f1d8fd
 
 HOST_BUILD_PARALLEL := 1
 

tools/patch/patches/001-fix-macos-vasnprintf.patch

---- a/lib/vasnprintf.c
-+++ b/lib/vasnprintf.c
-@@ -4858,7 +4858,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *
- #endif
-                   *fbp = dp->conversion;
- #if USE_SNPRINTF
--# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
-+# if ! (((__GLIBC__ > 2                                                 \
-+          || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))                  \
-+         && !defined __UCLIBC__)                                        \
-+        || (defined __APPLE__ && defined __MACH__)                      \
-+        || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
-                 fbp[1] = '%';
-                 fbp[2] = 'n';
-                 fbp[3] = '\0';
-@@ -4872,6 +4876,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *
-                    in format strings in writable memory may crash the program
-                    (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
-                    in this situation.  */
-+                /* macOS 10.13 High Sierra behaves like glibc with
-+                   _FORTIFY_SOURCE=2, and older macOS releases
-+                   presumably do not need %n.  */
-                 /* On native Windows systems (such as mingw), we can avoid using
-                    %n because:
-                      - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,