Add ASCII art boot logo

It's only printed when booting the Linux kernel.  Feel free to improve the
quality of the ASCII art.  It looks like this when rendered:

              vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
                  vvvvvvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvv
rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvv
rr                vvvvvvvvvvvvvvvvvvvvvv
rr            vvvvvvvvvvvvvvvvvvvvvvvv      rr
rrrr      vvvvvvvvvvvvvvvvvvvvvvvvvv      rrrr
rrrrrr      vvvvvvvvvvvvvvvvvvvvvv      rrrrrr
rrrrrrrr      vvvvvvvvvvvvvvvvvv      rrrrrrrr
rrrrrrrrrr      vvvvvvvvvvvvvv      rrrrrrrrrr
rrrrrrrrrrrr      vvvvvvvvvv      rrrrrrrrrrrr
rrrrrrrrrrrrrr      vvvvvv      rrrrrrrrrrrrrr
rrrrrrrrrrrrrrrr      vv      rrrrrrrrrrrrrrrr
rrrrrrrrrrrrrrrrrr          rrrrrrrrrrrrrrrrrr
rrrrrrrrrrrrrrrrrrrr      rrrrrrrrrrrrrrrrrrrr
rrrrrrrrrrrrrrrrrrrrrr  rrrrrrrrrrrrrrrrrrrrrr

       INSTRUCTION SETS WANT TO BE FREE

1 files changed, 14 insertions, 0 deletions

diff --git a/configure b/configure
index a6f4ffe..de70ae6 100755
--- a/configure
+++ b/configure
@@ -1301,6 +1301,7 @@ Optional Features:
   --enable-optional-subprojects
                           Enable all optional subprojects
   --disable-vm            Disable virtual memory
+  --disable-logo          Disable boot logo
   --disable-fp-emulation  Disable floating-point emulation
   --disable-atomics       Emulate atomic ops nonatomically
 
@@ -4047,6 +4048,19 @@ $as_echo "#define PK_ENABLE_VM /**/" >>confdefs.h
 
 fi
 
+# Check whether --enable-vm was given.
+if test "${enable_vm+set}" = set; then :
+  enableval=$enable_vm;
+fi
+
+if test "x$enable_logo" != "xno"; then :
+
+
+$as_echo "#define PK_ENABLE_LOGO /**/" >>confdefs.h
+
+
+fi
+
 # Check whether --enable-fp-emulation was given.
 if test "${enable_fp_emulation+set}" = set; then :
   enableval=$enable_fp_emulation;