src/arch/*/include/stdint.h: Provide definitions for bool type

Although bool normally belongs in stdbool.h, for our use cases,
providing these definitions in stdint.h is acceptable.

Change-Id: I1d0ca1018efacc27d7a4a72aa452912e004401f9
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/8279
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>

src/arch/arm/include/stdint.h

@@ -75,6 +75,10 @@ typedef int8_t s8;
 typedef int16_t s16;
 typedef int32_t s32;
 
+typedef uint8_t bool;
+#define true	1
+#define false	0
+
 #ifndef UINT32_MAX
 #define UINT32_MAX (4294967295U)
 #endif

src/arch/arm64/include/stdint.h

@@ -52,6 +52,9 @@ typedef int16_t s16;
 typedef int32_t s32;
 typedef int64_t s64;
 
+typedef uint8_t bool;
+#define true	1
+#define false	0
 
 /* Types for `void *' pointers.  */
 typedef s64             intptr_t;

src/arch/riscv/include/stdint.h

@@ -52,6 +52,9 @@ typedef int16_t s16;
 typedef int32_t s32;
 typedef int64_t s64;
 
+typedef uint8_t bool;
+#define true	1
+#define false	0
 
 /* Types for `void *' pointers.  */
 typedef s64             intptr_t;

src/arch/x86/include/stdint.h

@@ -75,6 +75,9 @@ typedef int8_t s8;
 typedef int16_t s16;
 typedef int32_t s32;
 
+typedef uint8_t bool;
+#define true	1
+#define false	0
 
 #ifndef UINT32_MAX
 #define UINT32_MAX (4294967295U)