system/grep: add patch for 32-bit ppc. fixes #671.

system/grep/APKBUILD

@@ -3,7 +3,7 @@
 # Maintainer: A. Wilcox <awilfox@adelielinux.org>
 pkgname=grep
 pkgver=3.7
-pkgrel=0
+pkgrel=1
 pkgdesc="Pattern matching utilities"
 url="https://www.gnu.org/software/grep/grep.html"
 arch="all"
@@ -15,6 +15,7 @@ subpackages="$pkgname-doc $pkgname-lang"
 source="https://mirrors.kernel.org/gnu/$pkgname/$pkgname-$pkgver.tar.xz
 	gnulib-tests-dont-require-gpg-passphrase.patch
 	fix-tests.patch
+	musl-ppc32.patch
 	"
 
 build() {
@@ -42,4 +43,5 @@ package() {
 
 sha512sums="e9e45dcd40af8367f819f2b93c5e1b4e98a251a9aa251841fa67a875380fae52cfa27c68c6dbdd6a4dde1b1017ee0f6b9833ef6dd6e419d32d71b6df5e972b82  grep-3.7.tar.xz
 fd97fccd661befc558b3afb3e32c82dd2cef511a05e6129d49540599297c1b59ab1f109e63a12f585a2348c26c28fb98330c348829d1fe61cf8149d0dd1c989c  gnulib-tests-dont-require-gpg-passphrase.patch
-9ba6b01c0c74933299afb469dadd2ea0c7e24befa34c691671a576063e32a1f0c735541e5e2bb0073d8afd814790909f7f895827aa8a2fbacdfcae380a7bcb11  fix-tests.patch"
+9ba6b01c0c74933299afb469dadd2ea0c7e24befa34c691671a576063e32a1f0c735541e5e2bb0073d8afd814790909f7f895827aa8a2fbacdfcae380a7bcb11  fix-tests.patch
+203765b90acf7fffaf8da9906e8d772ff81e074bf6585e35c713df107e9537c0a915013a327b3f770cc06c3a85f5ef55d6be32bbfdf6ce91a1aa1d4ac47e8ef3  musl-ppc32.patch"

system/grep/musl-ppc32.patch

+diff -ur a/lib/sigsegv.c b/lib/sigsegv.c
+--- a/lib/sigsegv.c	2022-05-07 13:35:30.000000000 +0000
++++ b/lib/sigsegv.c	2022-05-07 13:38:33.030000000 +0000
+@@ -222,7 +222,7 @@
+ #   if 0
+ #    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.regs->gpr[1]
+ #   else
+-#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.uc_regs->gregs[1]
++#    define SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) ucp)->uc_mcontext.gregs[1]
+ #   endif
+ #  endif
+