python: Fix capstone syntax values

The option values for capstone syntax bindings are currently out-of-sync
with capstone.h on the v5. This causes Python code using the syntax
options to not work correctly. For example, consider:

	import capstone as c
	md = c.Cs(c.CS_ARCH_X86, c.CS_MODE_32)
	md.syntax = c.CS_OPT_SYNTAX_ATT

This code will presently error on the latest 5.0.1 release, it works
on both the next branch and the 4.X releases. The error message is:

	capstone.CsError: Invalid option (CS_ERR_OPTION)

This is because commit 53eaeac broke
the option values on the v5 branch as it caused capstone.h and
bindings/python/capstone/__init__.py to define these values differently.

bindings/python/capstone/__init__.py

@@ -336,13 +336,13 @@
 CS_AC_WRITE    = (1 << 1) # Operand that is written to.
 
 # Capstone syntax value
-CS_OPT_SYNTAX_DEFAULT = 1 << 1  # Default assembly syntax of all platforms (CS_OPT_SYNTAX)
-CS_OPT_SYNTAX_INTEL = 1 << 2  # Intel X86 asm syntax - default syntax on X86 (CS_OPT_SYNTAX, CS_ARCH_X86)
-CS_OPT_SYNTAX_ATT = 1 << 3  # ATT asm syntax (CS_OPT_SYNTAX, CS_ARCH_X86)
-CS_OPT_SYNTAX_NOREGNAME = 1 << 4  # Asm syntax prints register name with only number - (CS_OPT_SYNTAX, CS_ARCH_PPC, CS_ARCH_ARM)
-CS_OPT_SYNTAX_MASM = 1 << 5  # MASM syntax (CS_OPT_SYNTAX, CS_ARCH_X86)
-CS_OPT_SYNTAX_MOTOROLA = 1 << 6  # MOS65XX use $ as hex prefix
-CS_OPT_SYNTAX_CS_REG_ALIAS = 1 << 7  # Prints common register alias which are not defined in LLVM (ARM: r9 = sb etc.)
+CS_OPT_SYNTAX_DEFAULT = 0  # Default assembly syntax of all platforms (CS_OPT_SYNTAX)
+CS_OPT_SYNTAX_INTEL = 1  # Intel X86 asm syntax - default syntax on X86 (CS_OPT_SYNTAX, CS_ARCH_X86)
+CS_OPT_SYNTAX_ATT = 2  # ATT asm syntax (CS_OPT_SYNTAX, CS_ARCH_X86)
+CS_OPT_SYNTAX_NOREGNAME = 3  # Asm syntax prints register name with only number - (CS_OPT_SYNTAX, CS_ARCH_PPC, CS_ARCH_ARM)
+CS_OPT_SYNTAX_MASM = 4  # MASM syntax (CS_OPT_SYNTAX, CS_ARCH_X86)
+CS_OPT_SYNTAX_MOTOROLA = 5  # MOS65XX use $ as hex prefix
+CS_OPT_SYNTAX_CS_REG_ALIAS = 6  # Prints common register alias which are not defined in LLVM (ARM: r9 = sb etc.)
 
 # Capstone error type
 CS_ERR_OK = 0      # No error: everything was fine