tools/libgnttab: Undo incorrect SONAME bump in c/s ee8105cab

Xen 4.11 shipped with a SONAME of 1.1.

For staging (and 4.12 eventually), the SONAME was bumped to 1.2 by c/s
28ca696a3.  Further changes before 4.12 ships should not bump the SONAME.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>

tools/libs/gnttab/Makefile

@@ -2,7 +2,7 @@ XEN_ROOT = $(CURDIR)/../../..
 include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
-MINOR    = 3
+MINOR    = 2
 SHLIB_LDFLAGS += -Wl,--version-script=libxengnttab.map
 
 CFLAGS   += -Werror -Wmissing-prototypes

tools/libs/gnttab/libxengnttab.map

@@ -31,10 +31,6 @@ VERS_1.2 {
     global:
 		xengnttab_fd;
 		xengntshr_fd;
-} VERS_1.1;
-
-VERS_1.3 {
-	global:
 		xengnttab_dmabuf_exp_from_refs;
 		xengnttab_dmabuf_exp_wait_released;
 		xengnttab_dmabuf_imp_to_refs;