target/riscv: Include missing 'exec/target_long.h' header

The "exec/target_long.h" header is indirectly included, pulled
via "exec/cpu-defs.h". Include it explicitly otherwise we'd get
when removing the latter:

  ../target/riscv/cpu.h:605:1: error: unknown type name ‘target_ulong’
    605 | target_ulong riscv_cpu_get_geilen(CPURISCVState *env);
        | ^~~~~~~~~~~~
  ../target/riscv/pmp.h:73:1: error: unknown type name 'target_ulong'
     73 | target_ulong mseccfg_csr_read(CPURISCVState *env);
        | ^
  ../target/riscv/debug.h:139:1: error: unknown type name 'target_ulong'
    139 | target_ulong tselect_csr_read(CPURISCVState *env);
        | ^
  ../hw/misc/riscv_cmgcr.c:112:15: error: unknown type name 'target_ulong'
    112 | static inline target_ulong get_exception_base(RISCVGCRVPState *vps)
        |               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20260313062055.2188-14-philmd@linaro.org>

hw/misc/riscv_cmgcr.c

@@ -19,6 +19,7 @@
 #include "migration/vmstate.h"
 #include "hw/misc/riscv_cmgcr.h"
 #include "hw/core/qdev-properties.h"
+#include "exec/target_page.h"
 
 #include "target/riscv/cpu.h"
 

target/riscv/cpu.h

@@ -27,6 +27,7 @@
 #include "exec/cpu-defs.h"
 #include "exec/cpu-interrupt.h"
 #include "exec/gdbstub.h"
+#include "exec/target_long.h"
 #include "qemu/cpu-float.h"
 #include "qom/object.h"
 #include "qemu/int128.h"

target/riscv/debug.h

@@ -23,6 +23,7 @@
 #define RISCV_DEBUG_H
 
 #include "exec/breakpoint.h"
+#include "exec/target_long.h"
 
 #define RV_MAX_TRIGGERS         2
 

target/riscv/pmp.h

@@ -22,6 +22,7 @@
 #ifndef RISCV_PMP_H
 #define RISCV_PMP_H
 
+#include "exec/target_long.h"
 #include "cpu.h"
 
 typedef enum {