Select RISC_ALIGNMENT for all MIPS processors

Though some of MIPS hardware do have unaligned memory access
support, and kernel will emulation unaligned memory access
on those don't. It is still better to select RISC_ALIGNMENT
for safety and better performence.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Author: FlyGoat

src/common/common.h

@@ -150,14 +150,17 @@
 
 #ifdef MIPSEL
 #define FB_CPU CpuMipsel
+#define RISC_ALIGNMENT
 #endif /* mipsel */
 
 #ifdef MIPSEB
 #define FB_CPU CpuMips
+#define RISC_ALIGNMENT
 #endif /* mips */
 
 #ifdef MIPS64EL
 #define FB_CPU CpuMips64el
+#define RISC_ALIGNMENT
 #endif /* mips64el */
 
 #ifdef IA64