misc: Fix coding style for enum's opening braces

The systemc dir was not included in this fix.

First it was identified that there were only occurrences
at 0, 1, and 2 levels of indentation (and 2 of 2 spaces,
1 of 3 spaces and 2 of 12 spaces), using:

    grep -nrE --exclude-dir=systemc \
        "^ *enum [A-Za-z].* {$" src/

Then the following commands were run to replace:

    <indent level>enum X ... {

by:

    <indent level>enum X ...
    <indent level>{

Level 0:
    grep -nrl --exclude-dir=systemc \
        "^enum [A-Za-z].* {$" src/ | \
        xargs sed -Ei \
        's/^enum ([A-Za-z].*) \{$/enum \1\n\{/g'

Level 1:
    grep -nrl --exclude-dir=systemc \
        "^    enum [A-Za-z].* {$" src/ | \
        xargs sed -Ei \
        's/^    enum ([A-Za-z].*) \{$/    enum \1\n    \{/g'

and so on.

Change-Id: Ib186cf379049098ceaec20dfe4d1edcedd5f940d
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43326
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/base/loader/object_file.hh

@@ -41,7 +41,8 @@
 namespace Loader
 {
 
-enum Arch {
+enum Arch
+{
     UnknownArch,
     SPARC64,
     SPARC32,
@@ -58,7 +59,8 @@ enum Arch {
 
 const char *archToString(Arch arch);
 
-enum OpSys {
+enum OpSys
+{
     UnknownOpSys,
     Tru64,
     Linux,

src/base/loader/symtab.hh

@@ -44,7 +44,8 @@ namespace Loader
 
 struct Symbol
 {
-    enum class Binding {
+    enum class Binding
+    {
         Global,
         Local,
         Weak

src/base/logging.hh

@@ -61,7 +61,8 @@ class Logger
     static Logger &getInfo();
     static Logger &getHack();
 
-    enum LogLevel {
+    enum LogLevel
+    {
         PANIC, FATAL, WARN, INFO, HACK,
         NUM_LOG_LEVELS,
     };

src/base/remote_gdb.cc

@@ -283,7 +283,8 @@ hex2i(const char **srcp)
     return r;
 }
 
-enum GdbBreakpointType {
+enum GdbBreakpointType
+{
     GdbSoftBp = '0',
     GdbHardBp = '1',
     GdbWriteWp = '2',

src/base/vnc/vncinput.hh

@@ -87,7 +87,8 @@ class VncInput : public SimObject
   public:
 
     /** Client -> Server message IDs */
-    enum ClientMessages {
+    enum ClientMessages
+    {
         ClientSetPixelFormat    = 0,
         ClientSetEncodings      = 2,
         ClientFrameBufferUpdate = 3,

src/base/vnc/vncserver.hh

@@ -71,7 +71,8 @@ class VncServer : public VncInput
     const static uint32_t VncOK   = 0;
 
     /** Server -> Client message IDs */
-    enum ServerMessages {
+    enum ServerMessages
+    {
         ServerFrameBufferUpdate     = 0,
         ServerSetColorMapEntries    = 1,
         ServerBell                  = 2,
@@ -79,7 +80,8 @@ class VncServer : public VncInput
     };
 
     /** Encoding types */
-    enum EncodingTypes {
+    enum EncodingTypes
+    {
         EncodingRaw         = 0,
         EncodingCopyRect    = 1,
         EncodingHextile     = 5,
@@ -87,7 +89,8 @@ class VncServer : public VncInput
     };
 
     /** keyboard/mouse support */
-    enum MouseEvents {
+    enum MouseEvents
+    {
         MouseLeftButton     = 0x1,
         MouseRightButton    = 0x2,
         MouseMiddleButton   = 0x4
@@ -98,7 +101,8 @@ class VncServer : public VncInput
         return "RFB 003.008\n";
     }
 
-    enum ConnectionState {
+    enum ConnectionState
+    {
         WaitForProtocolVersion,
         WaitForSecurityResponse,
         WaitForClientInit,