Add patch for mpich-3.4.3

Author: dalcinl

patches/mpich-3.4.3

@@ -0,0 +1,35 @@
+commit ec1c2bb8bf56bb7471fc537c527d8d8dffeec471
+Author: Hui Zhou <[email protected]>
+Date:   Tue Aug 24 20:06:27 2021 -0500
+
+    ch4/ofi: cleanup cacheline alignment
+    
+    The extra symbol MPIDI_OFI_CACHELINE_SIZE is not needed. Just use
+    MPL_CACHELINE_SIZE.
+    
+    Drop the useless alignment attribute on the whole struct. What we wanted
+    is to set alignment on one of its member.
+
+diff --git a/src/mpid/ch4/netmod/ofi/ofi_types.h b/src/mpid/ch4/netmod/ofi/ofi_types.h
+index d3a27de515..4bbf500f4c 100644
+--- a/src/mpid/ch4/netmod/ofi/ofi_types.h
++++ b/src/mpid/ch4/netmod/ofi/ofi_types.h
+@@ -30,7 +30,6 @@
+ #define MPIDI_OFI_DEFAULT_SHORT_SEND_SIZE  (16 * 1024)
+ #define MPIDI_OFI_MAX_NUM_AM_BUFFERS       (8)
+ #define MPIDI_OFI_AM_BUFF_SZ               (1 * 1024 * 1024)
+-#define MPIDI_OFI_CACHELINE_SIZE           (MPL_CACHELINE_SIZE)
+ #define MPIDI_OFI_IOV_MAX                  (32)
+ #define MPIDI_OFI_AM_HDR_POOL_CELL_SIZE            (1024)
+ #define MPIDI_OFI_AM_HDR_POOL_NUM_CELLS_PER_CHUNK   (1024)
+@@ -272,8 +271,8 @@ typedef struct {
+ 
+ typedef union {
+     MPID_Thread_mutex_t m;
+-    char cacheline[MPIDI_OFI_CACHELINE_SIZE];
+-} MPIDI_OFI_cacheline_mutex_t MPL_ATTR_ALIGNED(MPIDI_OFI_CACHELINE_SIZE);
++    char cacheline[MPL_CACHELINE_SIZE];
++} MPIDI_OFI_cacheline_mutex_t;
+ 
+ typedef struct {
+     unsigned enable_av_table:1;