fbsd/ena: Remove support for FreeBSD 11 from readme

1. Remove support for FreeBSD 11 from the README file.
2. Use FreeBSD 12 instead of 11 in all places in the README file
to avoid confusion regarding support for FreeBSD 11.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>

kernel/fbsd/ena/README.rst

@@ -11,7 +11,6 @@ Supported FreeBSD Versions
 
 **amd64**
 
-* *FreeBSD 11.0* - *FreeBSD 11.4*
 * *FreeBSD 12* - starting from ``rS3091111``
 * *FreeBSD 13*
 * *FreeBSD 14*
@@ -91,11 +90,11 @@ Git
   # Getting sources may vary between system versions. The resources need
   # to be adjusted accordingly. Some of the examples can be found below.
 
-  # For stable 11:
-  git clone https://git.FreeBSD.org/src.git /usr/src --single-branch --branch stable/11
+  # For stable 12:
+  git clone https://git.FreeBSD.org/src.git /usr/src --single-branch --branch stable/12
 
-  # For release (FreeBSD 11.4)
-  git clone https://git.FreeBSD.org/src.git /usr/src --single-branch --branch releng/11.4
+  # For release (FreeBSD 12.1)
+  git clone https://git.FreeBSD.org/src.git /usr/src --single-branch --branch releng/12.1
 
   # For CURRENT (unstable)
   git clone https://git.FreeBSD.org/src.git /usr/src --single-branch --branch main
@@ -137,10 +136,10 @@ Subversion - legacy
   # to be adjusted accordingly. Some of the examples can be found below.
 
   # For stable:
-  svn checkout https://svn.freebsd.org/base/stable/11/ /usr/src
+  svn checkout https://svn.freebsd.org/base/stable/12/ /usr/src
 
-  # For release (FreeBSD 11.1)
-  svn checkout https://svn.freebsd.org/base/releng/11.1/ /usr/src
+  # For release (FreeBSD 12.1)
+  svn checkout https://svn.freebsd.org/base/releng/12.1/ /usr/src
 
   # For -CURRENT (unstable)
   svn checkout https://svn.freebsd.org/base/head /usr/src
@@ -858,5 +857,5 @@ Unsupported features
 Known issues
 ------------
 
-- ``FLOWTABLE`` option (per-CPU routing cache) leads to system crash on both
-  FreeBSD 11 and FreeBSD 12-CURRENT system versions.
+- ``FLOWTABLE`` option (per-CPU routing cache) leads to system crash on
+  FreeBSD 12.0.

kernel/fbsd/ena/RELEASENOTES.md

@@ -2,12 +2,11 @@
 
 ## Supported Kernel Versions and Distributions
 
-ENA driver is supported on all FreeBSD releases starting from 11.2
+ENA driver is supported on all FreeBSD releases starting from 12.0
 
 The driver was verified on the following distributions:
 
 **Releases:**
-* FreeBSD 11.4
 * FreeBSD 12.3
 * FreeBSD 13.1