Use .s extension for ia64 assembler

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18136)
diff --git a/crypto/chacha/build.info b/crypto/chacha/build.info
index 2a819b2..5fe7477 100644
--- a/crypto/chacha/build.info
+++ b/crypto/chacha/build.info
@@ -5,7 +5,7 @@
   $CHACHAASM_x86=chacha-x86.s
   $CHACHAASM_x86_64=chacha-x86_64.s
 
-  $CHACHAASM_ia64=chacha-ia64.S
+  $CHACHAASM_ia64=chacha-ia64.s
 
   $CHACHAASM_s390x=chacha-s390x.S
 
@@ -37,4 +37,4 @@
 INCLUDE[chacha-s390x.o]=..
 GENERATE[chacha-c64xplus.S]=asm/chacha-c64xplus.pl
 GENERATE[chacha-s390x.S]=asm/chacha-s390x.pl
-GENERATE[chacha-ia64.S]=asm/chacha-ia64.pl
+GENERATE[chacha-ia64.s]=asm/chacha-ia64.pl
diff --git a/crypto/poly1305/asm/poly1305-ia64.S b/crypto/poly1305/asm/poly1305-ia64.s
similarity index 100%
rename from crypto/poly1305/asm/poly1305-ia64.S
rename to crypto/poly1305/asm/poly1305-ia64.s
diff --git a/crypto/poly1305/build.info b/crypto/poly1305/build.info
index 7f13fdc..212ab8c 100644
--- a/crypto/poly1305/build.info
+++ b/crypto/poly1305/build.info
@@ -5,7 +5,7 @@
   $POLY1305ASM_x86=poly1305-x86.s
   $POLY1305ASM_x86_64=poly1305-x86_64.s
 
-  $POLY1305ASM_ia64=asm/poly1305-ia64.S
+  $POLY1305ASM_ia64=asm/poly1305-ia64.s
 
   $POLY1305ASM_sparcv9=poly1305-sparcv9.S