Fix armv7-a L2CC and apply the code to the sabre-6quad board

[masayuki2009]

Summary

• This PR fixes style warnings and compile erros in arm_l2cc_pl310.c and l2cc_pl310.h
• Then I applied the code to the sabre-6quad board
• Also, I removed unnecessary d-cache operation to make boot fast

Impact

• armv7-a with L2CC
• sabre-6quad:nsh and sabre-6quad:smp

Testing

• Tested with sabre-6quad:smp (QEMU and dev board)
• Tested with sabre-6quad:nsh (QEMU and dev board)

[masayuki2009]

Hmmm, the following error happenned but the error does not relate to this PR.

====================================================================================
Configuration/Tool: stm32f429i-disco/nxwm,CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL
------------------------------------------------------------------------------------
  Cleaning...
  Configuring...
  Disabling CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL
  Enabling CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL
  Building NuttX...
src/chexcalculator.cxx: In member function 'void NxWM::CHexCalculator::updateText()':
Error: src/chexcalculator.cxx:676:38: error: expected ')' before 'PRI64X'
  676 |       std::snprintf(buffer, 24, "%16" PRI64X, m_accum);
      |                    ~                 ^~~~~~~
      |                                      )
Error: src/chexcalculator.cxx:680:36: error: expected ')' before 'PRI64d'
  680 |       std::snprintf(buffer, 24, "%" PRI64d, m_accum);
      |                    ~               ^~~~~~~
      |                                    )

[yamt]

@masayuki2009 apache/nuttx-apps#479

[masayuki2009]

@masayuki2009 apache/incubator-nuttx-apps#479

Thanks!

[jerpelea]

LGTM

[masayuki2009]

@btashton
Could you backport this PR to the 10.0 branch?

[btashton]

@btashton
Could you backport this PR to the 10.0 branch?

Sure I'll go through these tonight there are a few more as well. I already did this for these two, but if you add the label they will show up in my query so I won't miss them.

[masayuki2009]

@btashton
Could you backport this PR to the 10.0 branch?

Sure I'll go through these tonight there are a few more as well. I already did this for these two, but if you add the label they will show up in my query so I won't miss them.

@btashton
Ok, got it.