make OMAP5912 resets more reliable

Without some extra delay after releasing SRST, we seemed to
be trying to talk to the TAP before it was ready to respond.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

tcl/target/omap5912.cfg

@@ -14,6 +14,8 @@ if { [info exists CPUTAPID ] } {
    set _CPUTAPID 0x0692602f
 }
 
+jtag_nsrst_delay 100
+
 # NOTE:  presumes irlen 38 is the C55x DSP, matching BSDL for
 # its standalone siblings (like TMS320VC5502) of the same era